LG PF1500 Hidden Service Menus - Hack time? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 38 Old 07-24-2017, 10:22 AM - Thread Starter
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LG PF1500 Hidden Service Menus & Hack 3D into N.A. version?

I'll be making a few posts here about what I've found in the factory "hidden" Service Menus. There are plenty of chances here to really mess-up your projector, so beware and be careful!

One of my ultimate goals is to determine if the US version of the hardware (electronics) is capable of 3D projection like the German (EU) "Largo" version has. My experience over the past 40 years is that often, the source code for "software features" exists in all/multiple versions/models, but is only enabled on certain "specific models" of a product. This is true of anything from inexpensive consumer products, up to very high-end electronics test equipment costing up-to and well over $100k. Sometimes all it takes is sufficient poking and prodding around in the source code to find the "switch" to enable such features.

Fortunately, the software in these LG LED projectors utilizes Linux... and therefore the source code should be legally available to the public... since Linux is an Open Source Operating System. I have found the LG Open Source download site, and have grabbed all applicable files for the PF1500 models, as well as the PF1000 models.

"Linux" is the reason that so many alternates exist to Android phone software (XDA developers forum)... because Google based Android on Linux, and willing soldiers took the task upon themselves.

I'll post as time permits, but please give me a few days as I'm still in the "intel gathering" stages.

Be very careful while playing with these service menus, changing values/settings could brick your Projector!

Last edited by rtchinn; 07-25-2017 at 12:11 AM.
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post #2 of 38 Old 07-24-2017, 10:23 AM - Thread Starter
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Resources

LG Open Source website: http://opensource.lge.com/osSch/list...arch=projector
OPEN LG TV site: http://openlgtv.org.ru/wiki/index.ph..._menus_/_modes
LG Hacking Guide: http://beau.org/~jmorris/linux/lg-hacking/

Android app used for access: https://play.google.com/store/apps/d...tefairy4&hl=en
(I use the Free version, which only allows 1 (one) device. I use the first LG TV remote that comes up with a large diamond-shape keypad in the middle of the screen, but this remote has a 2nd screen... swipe it Left to get the 2nd screen... the buttons you'll be interested in are the "EZ-ADJUST" and "INSTART".

NOTE: I was not able to turn my PF1500 power ON -or- directional navigation with this remote app - use your factory remote or joystick button on unit.
(I don't have a factory remote yet, so I'm using the "SURE" remote app below for that and for Power ON/OFF. )

If you access a specific "feature" that you wish to change, then want to "go back" to the default service menu, just hit the same "EZ-START" or "INSTART" button again... otherwise you'll need to enter the access CODE again.

Service menu password for PF1500: 0413
Note: This was on a US version PF1500. Other "possible" password/codes are:
0000, 1111, 1105, 7777, 8741, 8743, 8878

Be warned that the "INSTOP" is FACTORY RESET... I learned the hard way, and had to completely customize my unit again. BUT... this can be useful in come cases... as it will also RESET the Factory Password in the projector.

I have taken pictures of every menu and item in my unit, and will post "redacted" versions (my personal info) soon... in the next reserved post.

REMOTE APPS - I have also found these remote apps to be useful:
"LG TV Remote" (by LG) - has pointer control, second-screen in-app (great if you have to walk out of the room for a minute without stopping your program), works very well.
"SURE Universal Smart TV Remote Control" - this is a GREAT 'free' app, and can control many devices that you can store.

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post #3 of 38 Old 07-24-2017, 10:23 AM - Thread Starter
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"EZ-Adjust" Service Menu

Images of the EZ-Adjust service menu and individual items.

Of SPECIAL interest to me (yes, I just saw this...) is the "Tool Option5" item menu... "3D Display Type" and "3D THX". I have NOT tried to do anything with this yet, but will do so ASAP and report back! I'm willing to risk mine, as I got it cheap, but YOU may not be! (they appear to be "greyed out", and may not even be adjustable... yet)

UPDATE: "Greyed out" items are not accessible... yet.

MORE TO COME
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post #4 of 38 Old 07-24-2017, 10:24 AM - Thread Starter
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INSTART service menu items

Images of the EZ-Adjust service menu and individual items.
(sorry for the blurry pictures, used my phone and it has a tough time focusing in a dark room)

Again, see this web site for some definitions and information: http://beau.org/~jmorris/linux/lg-hacking/

Of special interest here:
a) On the FAR LEFT column, 3rd item from the bottom "UTT" is Unit Total Time" in hours. This projector had over 2500 hours before it failed with the "cycling ON/OFF all by itself" issue... mentioned in other of my posts: post1 and post2

b) INSTART-9 Spread Spectrum. I have not tried this yet, but will be doing so soon, and will report back here. This could be turned OFF, and may increase performance slightly. It would also increase specific frequency EMI noises... so I can not suggest you change this for it may cause your unit to emit unlawful EMI interference. In a lab environment, this can eliminate some CPU overhead... as the intent is to induce CPU clock frequency "jitter" so that the EMI noise spectrum is widened... it "spreads the spectrum" of the EMI noise. (has nothing to do with Spread Spectrum communications!)

UPDATE: The two Spread Spectrum setting groups are: "FRC LVDS SS Control" - Translated = Frame Rate Converter LVDS Spread Spectrum Control; and "LVDS SS Control". (Note - LVDS is Low Voltage Differential Signalling, which is used for nearly all LCD and DLP interface to the main logic board.) These only affect the DLP interface... and as such would offer no performance benefit to modify... I'm not going to touch these on mine.


c) "16 - Fan Control" this monitors Temperatures and Fan status/speeds in real-time

MORE TO COME!
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post #5 of 38 Old 07-24-2017, 10:48 AM - Thread Starter
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post #6 of 38 Old 07-24-2017, 12:34 PM - Thread Starter
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post #7 of 38 Old 07-27-2017, 12:19 AM
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There is a way to enter and change functions of the Engineering menu. To enter the service menu, need any remote, active computer speaker system and 4 audio file (IN START, EZ ADJUST....). The 0413 password is typed in with the native remote control of the projector, and move and change with the native console. I'm a year ago in 2016 tried to configure (calibrate) in the service menu EZ ADJUST (the WHITE BALANCE), but it is off (--) menu IN START (3. ADJUST WHITE BALANCE: (--)). I couldn't activate (ADJUST WHITE BALANCE).
If you can turn ON (ADJUST WHITE BALANCE), then I'll tell you why.
Also looking for a way to activate 3D, but it took me (way).
The idea was to install the firmware from LARGO, but was afraid to ruin the projector. Contacted the support center of Russia, Germany and the USA, but got no answer or did not want to help. With the engineers of LV, I did not find how to contact.
You can contact official representative in the USA, is it possible to change firmware from the new PF1500W (US) to our 1500-NA projector ?
I really hope that you will be able to activate (ENABLE) 3D on the projector PF1500-NA (USA) and share the result and how to do it.


Есть ещё способ для входа и изменений функций Инженерного меню. Для входа в сервисное меню нужен любой ненужный пульт, активная компьютерная акустическая система и 4 звуковых файла (IN START, EZ ADJUST, ....). Пароль 0413 набирается с родного пульта проектора, а так же перемещения и изменения с родного пульта. Я ещё год назад в 2016 пробовал настроить (калибровать) в сервисном меню EZ ADJUST (WHITE BALANCE), но он выключен (--) в меню IN START (3. ADJUST WHITE BALANCE: (--)). Я не смог активировать (ADJUST WHITE BALANCE).
Если вы сможете включить ON (ADJUST WHITE BALANCE), то я расскажу зачем это нужно.
Так же искал возможность активировать 3D, но не нашёл возможности (способа).
Была идея установить прошивку от LARGO, но побоялся испортить проектор. Обращался В центр поддержки России, Германии и США, но не получил ответа или не захотели помогать. С инженерами ЛЖ, я не нашёл как связаться.
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post #8 of 38 Old 07-27-2017, 12:46 AM
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Since this thread is technical, I hope that the author does not take offense at what lay out your revision for the projector.
I recently made a high-quality linear audio power supply for the projector on the stabilizer part no lt1083cp (7.5 A).
When the projector is from the native impulse of BP in average mode brightness diode 80W (4.2 A) when voltage 220Вт.
My linear power supply consumes about 90W, 90:19=4.7 amps. Increased consumption due to low efficiency of the transformer and the costs of the current to the diode bridge and the regulator.
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post #9 of 38 Old 07-27-2017, 01:03 AM
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Also made a fixture to move the projector, which would certainly place the projector. The projector can be moved in 3 planes(up/down, Right/left, forward/backward).
Also recently made a device for reliable and precise adjustment, lens adjustment, what would the image was placed exactly in the screen and does not move when you touch the projector. The projector can povorachivaetsya and move the image (left/right, up/down and even a few degrees across). For watching TV broadcasts(digital TV), I use active speakers connected to the output of the projector to the headphones, control the volume with the remote control of the projector or TV set-top box. HD movies with multichannel sound, I certainly use a receiver with acoustics 7.1.
So did lining with black cotton velour, which reduces reflection from varnished (high gloss varnish) acoustics that make less glare and better black.
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post #10 of 38 Old 07-27-2017, 02:25 AM
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(PF1500 Lens
rtchinn
In one of your posts from a while back, you included a picture of the Lens assembly removed from the projector.
Do you have any more pictures of the lens?
In that picture, you also have another lens standing up next to it... what is that lens from?

What is the diameter of the barrel that inserts into the metal light engine housing? Your dimensions shown in Red indicate that the length of insertion (into the DLP housing) is about 20mm, and it appears that the diameter of that section is somewhat larger... maybe 25mm diameter?

It seems that LG used an optical engine made by QISDA - as told by Texas Instruments DLP group, who makes a DLP4710 Evaluation unit that uses the same optical engine as the LG PF1500 (seen in the pictures linked below).

I posted here some interesting lens-related pictures I found... some from T.I. documentation:
https://www.dropbox.com/s/axn1wr6lbl...0spec.jpg?dl=0
https://www.dropbox.com/s/1oknja7pst...file.jpeg?dl=0
https://www.dropbox.com/s/uz558feyff...0unit.jpg?dl=0
https://www.dropbox.com/s/a77ztybjrd...VM-G2.jpg?dl=0 )

I failed to replace the lens, because the glass lenses were either large case diameter (diagonal of 16mm film) or small (8mm film). The same focal length 50 and 35 were large and the image (picture) was small. At LG projector lens short focal distance of about 10-20. I tried to put the glass lenses from LOMO Russian cinema of the 1990s (USSR) 8mm and 16mm film. Matrix DLP projector LG 1500 12mm.
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post #11 of 38 Old 07-29-2017, 01:57 PM - Thread Starter
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Has anyone with a PF1500W version ever had their unit open... and taken pictures of the circuit boards?

I'm trying to confirm my suspicions that the PF1500 and PF1500W models use the same hardware... that it's just a software difference.

AND/OR... could someone with a PF1500W go through the Service Menus (EZ START and IN START) to compare against my results shown here:
https://www.avsforum.com/forum/68-dig...l#post54496417
https://www.avsforum.com/forum/68-dig...l#post54496433

I'd guess there are differences here:
a) EZ START - Tool Options1 "Tool Options1" number (top item - where mine indicates "33476"); Tool (model number) [If these values change, then it's possible MANY items are changed... pictures would be great!)

b) IN START - menu items 7 & 14

I'm about to try updating the firmware in my PF1500 to the latest for the PF1500W version. If it aborts due to "incorrect version" or some such error, I'd guess that the model number could be changed to allow the upgrade.
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post #12 of 38 Old 07-29-2017, 03:00 PM
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At Least 3 Different Cases

Quote:
Originally Posted by rtchinn View Post
I'm trying to confirm my suspicions that the PF1500 and PF1500W models use the same hardware... that it's just a software difference.
I have seen at least three different cases for the PF1500 and that implies at least three different circuit boards.

The PF1500 (2015) came with VGA (3D) or Ethernet (in the same place on the case). My PF1500 pro (2016) came with just ethernet.

My PF1500w case does not have the stacked usb ports. My PF1500w ports on the side (from the rear forward): HDMI2, LAN USB2, USB1, Optical, and Headphone.

The interface is extremely similar to the HF80JA so I cannot imagine that the firmware for the PF1500 Legacy (2015) would work. The remote on the PF1500w is incompatible with prior generations and the projector registers it on power up.

Nothing about the PF1500w except the case resembles the original PF1500, well, that and the apparent poorly chosen model number.


As far as settings, I think the internal wizard does a good job since it is available for quick use depending on the environment e.g. daytime or lights on.

One final trivia: I have an epson HC720 projector setup. It has less than 300 hours on it. I connected the PF1500 pro (2016) to the same 4x2 HDMI switch. The PF1500 has ten times the usage and it was brighter than the Epson. The Epson was rated at 1600 lumens.

The biggest misconception being pushed on this site is that bulb projectors are brighter than LED projectors. The best analogy is watching an ad on TV that say "buy this or that and save 50%". Of course, you never hear 50 percent of what. Bulb projectors may start much brighter but no professional reviewers ever follow up. So there is incentive to have bulb projectors produce very bright picture for a few a while and then what?

A lot of people are hung up on lumens without realizing that the brightness will drop dramatically over the first five hundred hours. I think your impression of the PF1500 gives a good idea of what I trying to say.
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post #13 of 38 Old 07-29-2017, 08:11 PM
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LG PF1500 Hidden Service Menus - Hack time?

Quote:
Originally Posted by obscuro View Post
A lot of people are hung up on lumens without realizing that the brightness will drop dramatically over the first five hundred hours. I think your impression of the PF1500 gives a good idea of what I trying to say.

Just before I replaced the lamp on my old W1070, I did a side-by-side comparison of the brand new one, against the 4000-hour old one (which had been run exclusively in brightest SmartEco mode).

The new one - in full-power mode - had the same amount of brightness that the old one had in Eco mode.

So that's only about 30% loss of brightness over the lifespan of the lamp. Not too bad.

That more-or-less goes in line with the standard AVSForum recommendation of setting up your theater to operate in Eco, and switching to the higher-power mode after a few thousand hours.


Still, while LED will indeed dim over extended periods of time, it's much slower than typical lamps, and there're other advantages to the tech as well.


The PF1500W looks like a cracker of a projector. It's been in my cart (thanks to that Fry's deal of $550!) twice already

Since you've owned both, how does it improve on the older PF1500? A few around here have commented on better brightness as well as color accuracy out the box... Have you found the same in your experience?

Do you have any means of measuring contrast between the two?

BenQ HT2050A Projector; Kodi (on Ubuntu, OpenELEC & S802) via Sony STR-DH540 AVR with Boston Acoustics SoundWare XS SE 5.1 Audio + Jamo 210 Sub. Emby for Mobile Streaming.
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post #14 of 38 Old 07-29-2017, 08:27 PM - Thread Starter
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Quote:
Originally Posted by obscuro View Post
I have seen at least three different cases for the PF1500 and that implies at least three different circuit boards.

The PF1500 (2015) came with VGA (3D) or Ethernet (in the same place on the case). My PF1500 pro (2016) came with just ethernet.

My PF1500w case does not have the stacked usb ports. My PF1500w ports on the side (from the rear forward): HDMI2, LAN USB2, USB1, Optical, and Headphone.

The interface is extremely similar to the HF80JA so I cannot imagine that the firmware for the PF1500 Legacy (2015) would work. The remote on the PF1500w is incompatible with prior generations and the projector registers it on power up.

Nothing about the PF1500w except the case resembles the original PF1500, well, that and the apparent poorly chosen model number.


As far as settings, I think the internal wizard does a good job since it is available for quick use depending on the environment e.g. daytime or lights on.

One final trivia: I have an epson HC720 projector setup. It has less than 300 hours on it. I connected the PF1500 pro (2016) to the same 4x2 HDMI switch. The PF1500 has ten times the usage and it was brighter than the Epson. The Epson was rated at 1600 lumens.

The biggest misconception being pushed on this site is that bulb projectors are brighter than LED projectors. The best analogy is watching an ad on TV that say "buy this or that and save 50%". Of course, you never hear 50 percent of what. Bulb projectors may start much brighter but no professional reviewers ever follow up. So there is incentive to have bulb projectors produce very bright picture for a few a while and then what?

A lot of people are hung up on lumens without realizing that the brightness will drop dramatically over the first five hundred hours. I think your impression of the PF1500 gives a good idea of what I trying to say.

I don't doubt that there have been different board sets... especially when we're talking about products being sold in different counties. The fact that yours does not have "AV IN" or "COMPONENT IN" seems to indicate it's not a NA product... is that right?

I guess my question was directed at "NA" (North America) products. My instance is that my PF1500 (a non-W) looks identical to the latest PF1500W on LG's North America web site... all connectors are the same... as shown in the linked images below

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post #15 of 38 Old 07-29-2017, 08:58 PM
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Quote:
Originally Posted by rtchinn View Post
I don't doubt that there have been different board sets... especially when we're talking about products being sold in different counties. The fact that yours does not have "AV IN" or "COMPONENT IN" seems to indicate it's not a NA product... is that right?

I guess my question was directed at "NA" (North America) products. My instance is that my PF1500 (a non-W) looks identical to the latest PF1500W on LG's North America web site... all connectors are the same... as shown in the linked images below

hi if I recall there was some reported differences between the original NA PF1500 and the European model which seemed to have some missing features and less overall picture quality.

My 2015 NA PF1500 looks the same as yours:




It would be great if you could figure out how to enable 3D in the firmware assuming it's possible with this hardware set.
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post #16 of 38 Old 07-29-2017, 11:12 PM - Thread Starter
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PF1500 Magic Remote part number

BTW... I just found the LG p/n for the SPECIAL version of the Magic Remote that works with the PF1500 projector:

Part Number: AKB74535402 (according to LG as given below)
Substitute Part:AKB74815502 (according to Encompass.com, though I'd suggest looking for the original p/n)

NeilE on LG Support replied: "Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at http://www.mcmelectronics.com/conten...forms/lg_parts. The part number for this remote control is AKB74535402."

I found another response by NeilE regarding the remote for the PF1000U that called for the p/n AKB74815502 .

I had already bought a couple of the "normal" all-black AN-MR500G remotes on eBay, and they WILL NOT register/pair with the PF1500. The hardware is most likely the same, but just as in the projectors... they upload a bit of custom code that makes it product specific... TV Magic remotes won't link to the Projectors.

See the picture - there is a row of 6 gold pogo-pin pads that they would use for this purpose.


(I tried to embed the picture, but this forum doesn't seem to like my public dropbox image links)

OTHER REPLACEMENT PARTS:
https://www.encompassparts.com/model..._/_/LG/PF1500/
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post #17 of 38 Old 07-30-2017, 12:34 AM
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I recommend first to try to replace the firmware from a European model Largo as visual photo no differences. The only difference is the TV tuner, but in the firmware there is a Largo 3D. The model PF1500-NA (USA) chip MKT 5398, PF1500W another (firmware Webos 3.0 and most likely a different chip.
ps. Before replacing the firmware, you need to compare in the service menu of the model chips.
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Last edited by esegan; 07-30-2017 at 01:22 AM.
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post #18 of 38 Old 07-30-2017, 11:18 PM - Thread Starter
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Lens update - not promising

I took apart my PF1500 again today to get a detailed look at the possibility of upgrading the projection lens... and the news is not very good... in fact, it's very bad.

First... the DLP light path design on these products is rather "different" from other DLP projectors... in that the "off-pixel" light absorption area appears to be INSIDE the lens!! (ugh!) (see pictures)

Remember, in a DLP system, the DMD reflects the light source to either:
"target A" which is through the Lens (for an "ON" pixel), or
"target B" for an "OFF" pixel, in which case the pixel light needs to be absorbed and kept away from the desired image path

In other words, a "dark" or "OFF" pixel on the screen is being reflected to the light absorber... but that pixel is still a mirror and still reflects the light... since the light source floods the entire DMD chip, so that all pixels are being illuminated... it's just reflected to a location where you (hopefully) can't see it. The only time there's no light hitting the absorber is when you have a full-frame WHITE, where all RGB colors are being directed to the screen 100% duty-cycle (and that wouldn't be a pure-white, but rather 100% of each RBG colors, which may not create a true White.).

In older (larger) DLP projectors, this "OFF" pixel absorption area is as far away from the lens as possible, so that the "OFF" pixel light does not get scattered back into the active area of the lens.
(DLP makers should look into using "Vantablack 2.0" on the light absorber... it's amazing stuff!)

HOWEVER... this new style light engine is an attempt to keep everything as compact as possible, and it seems that the "OFF pixel" absorption area has been designed to be internal to the lens. (see images)

This results in a much higher possibility of "OFF" pixel light being scattered into the image path through the lens... resulting in background light that will never be as "black" as in larger DLP projectors.

LG (actually Young Optics) used aluminum for the primary lens housing... this is the reason I've not seen any lens focus drift on my PF1500 (as I do on my Acer K132 and related LED 720p projectors)

I found something bad on my first lens (the first lens to get light - at the back of the lens assembly).
At first glance, I thought what we had was a plastic lens element that had been absorbing some of the light... and had begun to melt. (see pictures)
I discovered though that this first lens element is indeed glass (), and it was some kind of clear-ish contaminant that either melted onto the lens, or it was simply left there during manufacture. (makes me wonder how many others are like this!)

OK... so here's the final story on trying to upgrade to an all-glass projection lens (in order to get a better full-image focus)... unless Young Optics comes up with something, we're SOL... because, again, the OFF pixel absorption area is inside the lens... and that makes the lens 100% custom designed specifically for this light engine.

Other notes:
The first element of the projection lens is retained by a very thin stamped round steel retainer, held in with three tiny screws. This steel piece is black anodized to minimize reflections... but look at the picture and you will see that the black anodizing has been BURNT OFF where the light has been hitting it... adding to internal random light reflections.

I've been noticing a lot of light spillage across my ceiling (I have my projector ceiling mounted) and Left wall when operating this projector in total darkness, even with a full Black test image displayed. To me, this is a bit distracting when watching dark movies, so I experimented with making a "quick-n-dirty" (temporary) lens mask... see pictures for the results. While I did leave the factory chrome lens trim ring installed, I had previously "blacked out" the entire inside of it... all the red surface as well as the ID of the chrome ring... these are all surfaces that may be prone to causing reflections. (I used a black large permanent "sharpee" marker for this)

I'm going to design and 3D-print a lens ring clip-on image mask. I hope to push the mask opening right up almost against the front lens element for the best "effect". By making it "clip-on", I can make it easy to rotate separate from the lens focus ring... and align it after focusing.
Attached Images
File Type: jpg lens-mess_02.jpg (380.3 KB, 350 views)
File Type: jpg OFF pixel absorber.jpg (387.6 KB, 318 views)
File Type: jpg lens-mess_01.jpg (399.3 KB, 266 views)
File Type: jpg Burned anodizing.jpg (381.5 KB, 292 views)
File Type: jpg IMAG1563_sml.jpg (138.4 KB, 274 views)
File Type: jpg 7999_with lens ring_no tape mask_sml.JPG (353.6 KB, 281 views)
File Type: jpg 8000_with lens ring_with tape mask_sml.JPG (348.0 KB, 290 views)
File Type: jpg DSCN7959_sml.JPG (627.5 KB, 281 views)
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Last edited by rtchinn; 07-31-2017 at 11:07 AM. Reason: update: the T.I. 4710EVM-Gen2 light engine (as used by LG) mfr is Young Optics
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post #19 of 38 Old 08-01-2017, 10:36 AM
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Thumbs up

Loving this thread!
Thanks for ALL of the thread contributors hard and insightful work!!!
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post #20 of 38 Old 08-10-2017, 06:30 AM
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rtchinn
Why be silent, what results you've replaced the firmware or change to 3D?
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post #21 of 38 Old 08-31-2017, 10:36 AM
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I have a problem in the service menu. It would be great if someone had a tip.

I have reduced the fan speed via the service menu so that the projector runs much quieter. (Of course the temperatures are a bit higher, but the projector never feels really hot or so.)
Menu: "IN START" -> Fan Table -> Fan 1 Duty / Fan 2 Duty.

When I start the projector, the fans first run full speed, then after a few seconds go to a lower speed (the factory preset speed for the respective Eco level), and then after a while finally go to "my" lowered speed.

Now I wanted to make the projector go immediately after the short "full speed" phase to the real low RPM. So I thought the right thing would be to alter - in the above menu - the "Fan 1/2 Duty Init." values.
Unfortunately, while I can edit the values, they don't stick!
When I leave the service menu and return to it, they're reset to the factory values!

Any ideas??

Thanks in advance,
Hasenbein
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post #22 of 38 Old 09-01-2017, 09:07 PM
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Quote:
Originally Posted by hasenbein View Post
I have a problem in the service menu. It would be great if someone had a tip.

I have reduced the fan speed via the service menu so that the projector runs much quieter. (Of course the temperatures are a bit higher, but the projector never feels really hot or so.)
Menu: "IN START" -> Fan Table -> Fan 1 Duty / Fan 2 Duty.

When I start the projector, the fans first run full speed, then after a few seconds go to a lower speed (the factory preset speed for the respective Eco level), and then after a while finally go to "my" lowered speed.

Now I wanted to make the projector go immediately after the short "full speed" phase to the real low RPM. So I thought the right thing would be to alter - in the above menu - the "Fan 1/2 Duty Init." values.
Unfortunately, while I can edit the values, they don't stick!
When I leave the service menu and return to it, they're reset to the factory values!

Any ideas??

Thanks in advance,
Hasenbein
To play with the speed of the fans is a bad idea. Lowering the revs you increase the temperature, which will reduce the life of the projector will be faster to dry out the capacitors at elevated temperature. If you interfere with the fan noise, the best way to combat noise is to install less noisy and larger fan on the outside of the tread. So (do) the Germans on the European projectors Largo, but they have problems in the firmware section of the fan control.
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post #23 of 38 Old 09-02-2017, 01:36 AM
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I dind't want a lecture about pros and cons of lowering fan speed.
I always was fully aware about the side effects (and potential side effects), but for me personally (!) it's worth it.

I just want an answer to my above question, OK? Thx.
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post #24 of 38 Old 09-11-2017, 10:59 AM
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Any chance to hack new firmware in? LG has firmware updates for PF1500W but not for PF1500. Even though LG website shows PF1500Wfirmware for PF1500 update doesn't work.
Or maybe some side firmware to make WiFi more stable and better media server connectivity.
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post #25 of 38 Old 10-16-2017, 10:11 PM
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I was really hoping that they will do some improvement with the projector, such as deeper black and 3D. But 3 months have passed, but all remained in theory, very sorry.

ps. I already wrote that did wireless motorized focus, although in principle pretty well through the home page of YouTube you to adjust the sharpness in the center with the assessment of sharpness at the edges.
So I decided to check so the deviation distance of the edges, took a white sheet attached to the Paradise of the screen and began to move the sheet. And then I was puzzled after seeing what that grid on the sheet and immediately realize that it's pixels. They are very small 1-1.5 mm and fine tuning the focus pixels have a dramatic. Hence I concluded that for fine tuning better focusing on the pixels and hence no wonder I hooked up a wireless motorized focus, maybe at a distance they are not set.
The photo was not very sharp, maybe, in one hand holding the sheet, and in another camera and in the dark shutter is not fast, and I do not have the stability of a tripod, but to see the ribs.
I can assume if I used a LG DLP matrix larger than 0.47, the brightness would be even greater.
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Last edited by esegan; 10-16-2017 at 10:25 PM.
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post #26 of 38 Old 10-16-2017, 11:10 PM - Thread Starter
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All DLP and LCD projectors have some inter-pixel gap. The smaller the imaging device, the larger that gap is (relative to the pixel size)... here's why:

The design and manufacturing of the imaging device will always be optimized for minimum feature size, so... in the case of the DMD device in a DLP projector, the inter-pixel gap (the gap between adjacent micro-mirrors) will be the same size on the 0.47" DMD as in the larger DMD devices. What this means is that the RATIO of the pixel size to the gap is BETTER on physically larger DMD chips, even though they have the same number of pixels.

This is one more "con" to ultra-small DLP projectors, versus "normal" size home theater DLP projectors.

The lack of contrast is also caused by the small packaging limitations, since they didn't have the proper room "external" to the DMD light path to "dump" the OFF pixel light... as would normally be the case with larger projectors. That light gets reflected and ends up back into the DMD and Lens... and therefore the screen. This is one area where I know I can improve the contrast performance, but I need a separate projector to perform my experimental upgrades on, and I have not been able to afford another used one for that purpose.

Likewise the smaller optics are harder to make "good quality" like the larger optics... these projectors have a lot of internal reflections due to the plastic elements and low-cost design.
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post #27 of 38 Old 10-16-2017, 11:41 PM
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Thanks for the reply, but I don't need to explain. I understand and know that the more the DLP matrix, the more the petal and the pixel area, and therefore more (total) area of the reflecting surface of the matrix with the same gaps between pixels in a small matrix.
So I don't understand why LG persistently (stubbornly) use 0.47 a matrix. Because the utilization of a larger matrix does not greatly increase the chassis (basket) of the optical node. Increase the size of the reflecting mirrors and is slightly increased diameter objective lens, but it's not would lead to a significant increase in the size of the projector, but the brightness will increase.
What about activating 3D, because the procedure for correcting and reconstructing or replacing of the firmware requires no internal mechanical interventions change?

Last edited by esegan; 10-16-2017 at 11:49 PM.
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post #28 of 38 Old 10-30-2017, 11:28 PM
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Quote:
Originally Posted by rtchinn View Post
Likewise the smaller optics are harder to make "good quality" like the larger optics... these projectors have a lot of internal reflections due to the plastic elements and low-cost design.
Have you tried to deal with the problem of non-uniformity of sharpness horizontally and fix it ? What do you think (guess) what is and what is the problem of uneven focus, crooked DLP matrix, unevenly located reflecting mirror, unevenly bolted obektiv or a problem in the quality of the lens, for example, unevenly installed 1 or a few lenses? If you have not tried or do not know what the problem is, it is not mogliby to know (prokonsultirovatsya) in the support or service center, what is the reason for the irregularity? I find it very difficult to do, since I don't know the English language and through correspondence difficult to communicate with customer support, they have one answer, send to service center for repair. As far as I know, it's a massive problem projectors LG and applies to all models and very difficult to find a projector with good uniform sharpness.
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post #29 of 38 Old 10-31-2017, 07:42 PM - Thread Starter
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I am still trying to buy a 2nd unit that I can experiment with, but have not had success yet.

There are just too many possibilities of what the problem could be to make more than a guess... and you hit on every one of them. It will take quite some time and effort to determine the exact cause (or causes) and then to correct them as much as possible.

Basically I will have to find a way to run the projector while still apart by lengthening cables, adding fans, etc... so that I won't have to reassemble it and disassemble it over and over. Then I can remove the lens freely and begin the trial and error modifications.

I wish it could happen faster, but I don't have $500 to 650 USD extra to invest in this yet, and I doubt very many people would have interest in "crowd funding" for me to do this... though once a solution were discovered, I could offer the modification service for those who "funded" it and don't want to try it themselves.
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Enabling 3D by changing country code

This is totally my hypothesis, but given that the hardware is identical across the regions, you may be able to get 3D feature by changing country code (US) to other country (i.e. Korea) where 3D support is enabled. This is how people in Korea get their TV cheap from US and make its tuner to work with Korean channels. It is usually done by changing the code (i.e. 22282 to 18077 for US to Korea in some LG models) in the service menu (EZ-ADJUST). Be careful though there are some horror stories heard that their TV got bricked after following this method. One tip often shared is you should make sure language setting changed to Korean first before touching country code, otherwise you may stuck in infinite boot. IT'S ALL AT YOUR OWN RISK
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