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LG Plasma Panel tweaks for better blacks. - Page 38

post #1111 of 1390
Quote:
Originally Posted by rob80b View Post

Ya. But they're toooo late!!!!.

MUAHAAAHAAAAA!!!!! The fools!!
post #1112 of 1390
Just borrowed an old X-rite DTP-94. MLL measure to 0.023 ftl @24hz and 0.015 ftl @60hz.

But I only touched the Set_Up pot (fully clockwise). My fingers just started to itch... guess they want to touch some more pots
post #1113 of 1390
Quote:
Originally Posted by Fade View Post

Just borrowed an old X-rite DTP-94. MLL measure to 0.023 ftl @24hz and 0.015 ftl @60hz.

But I only touched the Set_Up pot (fully clockwise). My fingers just started to itch... guess they want to touch some more pots

What did it measure before your adjustment?
post #1114 of 1390
Thread Starter 
Speaking of meters, I haven't used one since I got out of the game as a professional consultant for pro photographers and desktop publishing in 2005, the consumer Eye-One and Spyders were just hitting the market so we depended on spectrometers, which were very expensive at that time.
How do the newer consumer models hold up these days and their measuring range, might pick one up if their life span is more than a year or so.





post #1115 of 1390
My i1 LT is still going strong after a year and a half. I keep it in an airtight container within another airtight container. While it may not be as accurate as it was on day one, I don't think your eyes would be able to discern much of a difference. I still use it on my laptop and LCD monitor to calibrate and I haven't noticed any color push when comparing to older profiles. I calibrate about once a week whenever I do serious color grading/correction for clients.

If you have a friend with an i1 Pro, pick up the i1 LT and profile it with the i1 Pro (provided your friend is nice. Offering lunch or dinner might help). The meter is the same so might as well save some money if you can.
post #1116 of 1390
I have the i1 LT (a.k.a. D2) as well, and it has been working perfectly for about 4 years now. I keep it in a simple zippered case. It is not airtight.

I also own an i1 Pro (spectroradiometer), and the D2 agrees very well with the Pro. Although the Pro is faster and more accurate for chroma overall, the D2 is significantly more sensitive at low light levels. You could not make these MLL measurements reliably with the i1 Pro. The inexpensive little D2 blows it away in this regard.
post #1117 of 1390
Quote:
Originally Posted by rpauls View Post

What did it measure before your adjustment?

sorry to say I do not know :/ It was brighter though... This is my first measurement ever (with a borrowed meter). Also just calibrated my first 2 point grayscale, fixed my crushed black issues Guess I do a 20p when I figure out which meter/bundle I shall order.
post #1118 of 1390
Quote:
Originally Posted by Fade View Post

sorry to say I do not know :/ It was brighter though... This is my first measurement ever (with a borrowed meter). Also just calibrated my first 2 point grayscale, fixed my crushed black issues Guess I do a 20p when I figure out which meter/bundle I shall order.

The 20 point is very difficult. You will be simultaneously adjusting RGB and gamma curve. It takes a long time to understand what you are doing, and hours and hours to get it right, and makes pretty much no noticeable difference except in the near blacks, which are pretty bad anyway on the LG.

Unless you really enjoy this sort of thing I'd say stick with the 2 point.
post #1119 of 1390
Thread Starter 
Thanks guys,

Any major advantages between the old and newer "1"s, except price?
(guess I could just be lazy and look it up but the forums are more fun)

I tweaked the PX950 THX setting slightly by eye and to my trained eye (over 30+ years in pro photography, desktop publishing and digital imaging) and IMHO experience it's pretty good but a meter always helps especially in the upper and lower spectrum, but I'm really curios to get a reading on that current MLL.
post #1120 of 1390
Quote:
Originally Posted by rob80b View Post

Ya. But they're toooo late!!!!.

Or mabye we can grab some of them here ... http://www.jordansmanuals.com/Defaul...A&Model=60PZ9M
post #1121 of 1390
that's why I bough from ebay some of the pk550 boards, just in case something get damage by the time,warranty is over, if something get damage in the future,the possibility to found parts will be harder.
post #1122 of 1390
Quote:
Originally Posted by rob80b View Post

Ya. But they're toooo late!!!!.

The problem is that I didn't download and save the pdf files for the pk550







they now have a new link, but it need a user name and password to enter to see the manuals

http://gsfs-america.lge.com/login.jsp
post #1123 of 1390
Thread Starter 
Quote:
Originally Posted by losservatore View Post

The problem is that I didn't download and save the pdf files for the pk550


they now have a new link, but it need a user name and password to enter to see the manuals

http://gsfs-america.lge.com/login.jsp

Big Brother is watching.

(Canon G10 Netflix/ATV2- Tim Roth's Lie to me opening sequence)

But I'm sure someone here has a copy
post #1124 of 1390
Thread Starter 
Quote:
Originally Posted by Owenscott View Post

Or mabye we can grab some of them here ... http://www.jordansmanuals.com/Defaul...A&Model=60PZ9M

Thanks Owen

I've seen these but they are very different from the training manuals, which give you a step by step pictorial view of the panel adjustments.
post #1125 of 1390
Quote:
Originally Posted by rob80b View Post

Ya. But they're toooo late!!!!.

I just got a LG 50PV400 and am doing my research for the pot adjustments etc,
If rob80b or anyone knows where I can get Tech manuals for a LG50PV400 it would be much appreciated.
Or if anyone here could email a copy that would be great (just pm me for my email )
Thanks to all those who have shared fruits of there hard work...

Thanks

EDIT:
I found and downloaded the training manual for 50pv450 here in case anyone needs it:
http://elektrotanya.com/lg_50pv450_t.../download.html
post #1126 of 1390
I just upgraded from a 10 yr old rear projection to an LG60pv250.

I know nothing about all this "deeper black" stuff nor how to even tell if I need to make any changes. I did see some pics from one of the posters here and saw what everyone seems to be referring to.

My question is..... would it be wise for me to try and make any of these adjustments? Obviously, I'm not a TV tech. I do have some electronic smarts and have been known to figure some things out from time to time. But I don't have any special equipment to measure any of this stuff.

I welcome anyone's advice. Thank you in advance.
post #1127 of 1390
Quote:
Originally Posted by redness44 View Post

I just upgraded from a 10 yr old rear projection to an LG60pv250.

I know nothing about all this "deeper black" stuff nor how to even tell if I need to make any changes. I did see some pics from one of the posters here and saw what everyone seems to be referring to.

My question is..... would it be wise for me to try and make any of these adjustments? Obviously, I'm not a TV tech. I do have some electronic smarts and have been known to figure some things out from time to time. But I don't have any special equipment to measure any of this stuff.

I welcome anyone's advice. Thank you in advance.

Welcome to AVS. Although I may not post as much as others, I have lurked for many years!
I own a PZ 60 950 and I have done a "self-calibration" that was suggested by a member here in the Official LG PZ Owners Thread. I tweaked it to my personal liking. I can tell you this... Some complain about the "black levels" and all, but I am EXTREMELY impressed with ALL aspects of my television including black levels! I have perfect vision and watch mostly Blu Ray Movies and HD content: Sports, NetGeo, TLC, A&E, etc. I have zero desire to try and open up my TV in the sake of slightly deeper blacks. I have seen more expensive sets and the PQ my TV gives me... I am VERY content.

My $.02
post #1128 of 1390
Thread Starter 
Quote:
Originally Posted by redness44 View Post

I just upgraded from a 10 yr old rear projection to an LG60pv250.

I know nothing about all this "deeper black" stuff nor how to even tell if I need to make any changes. I did see some pics from one of the posters here and saw what everyone seems to be referring to.

My question is..... would it be wise for me to try and make any of these adjustments? Obviously, I'm not a TV tech. I do have some electronic smarts and have been known to figure some things out from time to time. But I don't have any special equipment to measure any of this stuff.

I welcome anyone's advice. Thank you in advance.

Quote:
Originally Posted by TXSTYLE View Post

Welcome to AVS. Although I may not post as much as others, I have lurked for many years!
I own a PZ 60 950 and I have done a "self-calibration" that was suggested by a member here in the Official LG PZ Owners Thread. I tweaked it to my personal liking. I can tell you this... Some complain about the "black levels" and all, but I am EXTREMELY impressed with ALL aspects of my television including black levels! I have perfect vision and watch mostly Blu Ray Movies and HD content: Sports, NetGeo, TLC, A&E, etc. I have zero desire to try and open up my TV in the sake of slightly deeper blacks. I have seen more expensive sets and the PQ my TV gives me... I am VERY content.

My $.02

Hi redness44

For time being I would leave the set as is, take TXSTYLE's advice and possible calibrate your set and see how you like the overall image which should be an a nice upgrade from the 10 year old rear projection.
Like TXSTYLE I was very happy with my stock PX950, blacks were more than acceptable but the overall PQ was why I chose my set in the first place over the other sets.
Now having said that just when I thought the picture wouldn't get better I took the plunge (I'm a tweaker at heart) and tweaked my set, all I can say there is no going back.
But.... if I had never discovered there was a means to lowering the MLL on the LG plasmas I would still have been content.

So how do you like your new LG 60pv250?
post #1129 of 1390
Now that lg found out that we are tweaking our tvs,Im hoping that they don't eliminate the pots on future boards.
post #1130 of 1390
Thread Starter 
Quote:
Originally Posted by losservatore View Post

Now that lg found out that we are tweaking our tvs,Im hoping that they don't eliminate the pots on future boards.


I do not see why they would, but if they have been listening their sets should be coming off the assembly line with an average + - MLL of .004 and no IR.
post #1131 of 1390
Quote:
Originally Posted by rob80b View Post

So how do you like your new LG 60pv250?

No doubt it's a HUGE improvement over my rear projection!! I still don't have HD programming yet so I can't speak for how great the PQ's going to be once I upgrade.

I tried a little tweaking in the picture settings menu last night and can't really notice any difference. But honestly, I don't really know what I'm doing.

I'm even wondering if the calibration you're speaking of is some sort of hacking or adjusting the picture settings in the menu like I was doing.

I would very much appreciate it rob80b if you could give me some guiding light in all this. Even if it is just adjusting the picture menu settings. I'd actually prefer adjusting things that way, as has been suggested.
post #1132 of 1390
Just scored an awesome deal on a brand new i1 display lt. Will post my current mll results using the new colorimeter. The old spyder 2 express can go back on sale on ebay :P.
I have the 50pk250 presentation file saved which shows step by step view of the panel adjustments and voltage measurements. If anyone needs I can try to post online somewhere. Is there a place i can upload it to online?
post #1133 of 1390
Thread Starter 
Quote:
Originally Posted by redness44 View Post

No doubt it's a HUGE improvement over my rear projection!! I still don't have HD programming yet so I can't speak for how great the PQ's going to be once I upgrade.

I tried a little tweaking in the picture settings menu last night and can't really notice any difference. But honestly, I don't really know what I'm doing.

I'm even wondering if the calibration you're speaking of is some sort of hacking or adjusting the picture settings in the menu like I was doing.

I would very much appreciate it rob80b if you could give me some guiding light in all this. Even if it is just adjusting the picture menu settings. I'd actually prefer adjusting things that way, as has been suggested.

Hi redness44

There is a lot of info available for calibration but at this point I would just adjust your contrast and brightness to 50 for the first week or two, it will look duller but it's just to equalize the phosphors and keep image retention at a minimal, after which contrast at 80 and brightness at 50-55 should be fine.

Then if you're are interested in basic calibration you might want to pickup up a copy of DVE http://www.amazon.com/Digital-Video-...tag=gmgamzn-20, Spears and Munsil calibration disc http://www.amazon.com/Spears-High-De...1311050&sr=1-1 or the Disney WOW http://www.amazon.com/Disney-WOW-Wor.../dp/B0045ASBLG , all will guide you through step by step.
post #1134 of 1390
Quote:
Originally Posted by losservatore View Post

Now that lg found out that we are tweaking our tvs,Im hoping that they don't eliminate the pots on future boards.

Ha! No, next year they are going to tweak them themselves and charge twice as much for the set ;-) If anything, LG should be thrilled with what has been discovered on this thread!
post #1135 of 1390
Quote:
Originally Posted by losservatore View Post

The problem is that I didn't download and save the pdf files for the pk550


They never had a 60pk550 manual up, but they had the 60pk750. I have all the pk750 docs as well as the general LG Panel Alignment Handbook if needed.

Rob, do you want to host these somewhere?
post #1136 of 1390
I've got the pz550 manual For Y'alls Info
post #1137 of 1390
Quote:
Originally Posted by rob80b View Post

Hi redness44

There is a lot of info available for calibration but at this point I would just adjust your contrast and brightness to 50 for the first week or two, it will look duller but it's just to equalize the phosphors and keep image retention at a minimal, after which contrast at 80 and brightness at 50-55 should be fine.

Thanks a ton! I'll do that as soon as I get home.

I'll probably post some more questions soon about the other settings too. There seems to be a lack of descriptive info on what the other adjustments do.
post #1138 of 1390
Quote:
Originally Posted by rpauls View Post

They never had a 60pk550 manual up, but they had the 60pk750. I have all the pk750 docs as well as the general LG Panel Alignment Handbook if needed.

Rob, do you want to host these somewhere?

awesome that's exactly what I need,I will appreciate a upload please share the link later thanks.
post #1139 of 1390
Thread Starter 
Hi Guys

Just an update, as most of you may remember I only tweaked the Set_up to lower my MLL and I do get massive misfires on my PX950 on start up when the room was cold and then it would completely clear up after about a minute or so, keep in mind that during that minute blacks were at or close to zero black but too noisy for practical viewing.
Well the temperature is starting to rise with the spring but oddly enough I’m now experiencing random (but not excessive) red pixel misfires even after warm up, this may be from the fact that there is less of a temperature difference after start up and the temperature sensors are keeping the overall panel MLL at a lower level as blacks have gotten blacker but bordering on the level closer as to when turning on the set in a cold room.
Another scenario may be that the power supply voltages have shifted slightly but my intuition says it’s probably the former.
At this point the misfires are not obvious from the viewing position and appear not to be stationary, being more like random stuck pixels which disappear as the screen is refreshed so I may wait until we approach the lazy days of summer and see if the MLL continues to drop but unfortunately most likely with even more misfires but I'll have to wait and see.
At which point if they do I may need to get out the screwdrivers again and try tweaking the Set-up a bit counter-clockwise and maybe try the Set-dn, I’d rather leave the power supply voltages at the factory settings to adjust the MLL, (not a lot mind you, more like the ST/GT30s and not VT30 blacks), just enough to keep the misfires to a minimum.
Either way I’ll keep you all up to date.
post #1140 of 1390
Great reading (or looking at the pictures). I really enjoy the fact that you guys open up the tv to tweak it. Keep ut the good work!
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