2011 Mitsubishi DLP WD-73640 official thread - Page 61

I think I found it.... This might be a limitation in the Mitsubishi.... If I change the MXO2 output to 720p/59.94, then I get an output on the Mits...

If anyone has successfully fed 1080i/29.97 to the Mits 73640, please post....

Either RGB or YUV worked....


Thanks...
Edited by Jan J - 2/3/13 at 8:18am

I have a question. I noticed I am starting to get the occasional flicker on this set now. Like it switches between bright and standard bulb lighting. Is the bulb starting to go or does that sound like the light engine? Bulb hours is at 2312.

Our 73640 light is set at bright... Occasionally I see flickering... I changed lamp output to low, and it kept flickering, so it isn't that. I switched back to high level lamp, and it eventually went away...

I've seen many lamps fail (I do the replacements at work, where we have 20 or so of them), and usually when it goes it's one of two ways....
Catastrophic failure (you hear glass breaking), and melted lamp assembly and light moves out of the center of the reflector, and it gets dim.

Why would you not use something like a consumer Nvidia or ATI or an embedded Intel iGPU? They all work fine.I use a i3 Sandy Bridge with the integrated video. I have Ceton 4 tuner cable card tuner and 2 HD Homerun ATS dual tuners. That provides 7 tuners for WMC DVR and the picture quality is great. I run the set with geometry correction OFF!!!. I use no scaling. I let it overscan and only scale to do maintenance. WMC and the Intel grpu do a fine job. Get a consumer type discrete GPU.. something in the $40 dollar range will work fine. I suggest Nvidia because of the stable drivers, but if you any kind of Sandy Bridge or Ivy Bridge CPU with integrated graphics it will work very well and uses very little power.

I've had someone else attempt to feed 1080i/29.97 to Mitsubishi DLP's... Here's his results:

Mitsubishi 65733 firmware 009.03-
Matrox output pref set to 1080i does not display video or audio at all
Matrox output pref set to 1080p does not display video or audio at all
Matrox output pref set to 720p does display video and audio but with BOTH letterbox and pillarboxing (ie. proper aspect ratio but surrounded by black borders) (TV on standard format setting)

Mitsubishi 65738 firmware 012.08-
Matrox output pref set to 1080i displays both video and audio as expected
Matrox output pref set to 1080p displays both video and audio as expected (showing interlace)
Matrox output pref set to 720p displays video and audio as expected (fullscreen, no borders) (on TV standard format setting)

For fun-
Visio E200VA-
1080i is fine
1080p is fine
720p is green skin and purple background weirdness (this is from the MXO2's HDMI output, simultaneous to the other 720p tests which were from SDI output to AJA Hi-5)

Looks like your TV is the culprit to me. Strange, I really expected my older TV to display the 1080 signal just the same as the newer one...


If anyone has been successful (OR NOT) with getting 1080i/29.97 feed to display on a 73640 via HDMI Connection, would you kindly post what product you used, how you know it is 1080i/29.97 footage, and what firmware in the 73640, Please?

Thank You

There is nothing special about the 73640 works fine on both my 92840 and my 82837... Use a source other than your Matrox.

can you confirm you can display 1080i/29.97 on the 73640?

I'm trying to determine if it can be done on the 73640. If so, what hardware did you use?

I would prefer to display 1920x1080/29.97 than 720p/59.94, as I'm trying to avoid cross conversion artifacts. The original edit was in 1920x1080/29.97.

(1920x1080/29.97 gives bluescreen and audio. Same playback converted to 1280x720/59.94 plays back flawlessly)

I just got off the phone with Mitsubishi. 800-332-2219

They say the 65738 and 73640 supports both 1080i/29.97 and 1080i/60

He did a check on the 65733, and he believes that you are correct, the 65733 doesn't support 1080i/29.97

Interesting....

I obviously have some more testing to do....

I don't know how I can make it any clearer. Get rid of the Matrox and use a recent ATI, Nvidia or Intel iGPU. These modern Mits displays all handle the timings you ask about. You are spinning your wheels. There is nothing about your display that should give it any trouble with those timings. Any 1080i broadcast either cable or over the air is 29.97. The internal runer handles that.

I borrowed a AJA HI-5 from work. Put it on HDSDI output A set for 1080i/29.97...
AJA LED went Red, as it would for an HD signal.
Connected the HDMI Cable to Mitsubishi 73640.
Played the Premiere 1080i/29.97 project. Got a Blue Screen with audio on the Mitsubishi.

OK... One thing I haven't told you. It's a 45' HDMI cable.

So, let's say it's the cable length.... SO.....
I put a 40' coax on the Primary HDSDI output of the Matrox... Put the HI-5 at end of cable, and a 10' HDMI cable into Mits DLP. (It's the same cable that the 1080p scan converter used successfully to this same HDMI Port).
I get Blue Screen with audio on this test....

That confirms it. It's the Mitsubishi... that's not playing 1080i/29.97 properly...

Thanks for listening....

PS to this...gtgray: My GPU is a Quadro fx 4800. The MXO2 is a I/O BOB

After finishing and posting the above last night, I realized there might be one more thing to try......

I was in Freerun, not genlocked mode. It could be that the freerun frequency is slightly outside what Mits can accept on 1080i/29.97....

So I genlocked it with a Sync Generator using NTSC Black Burst.

Unfortunately that did not help... The Mitsubishi 73640 output blue screen and audio when in freerun or genlocked, with or without the HDMI being generated off the MXO2 or AJA HI-5 off HDSDI.

The Mits 73640 WILL work Genlocked on 720p/59.94, but not 1080i/29.97

I think I have my smoking gun...
Edited by Jan J - 2/8/13 at 7:42am

I don't know about your set but these sets do fine with 1080i at 29.97. I have a Tivo HD set to Native it puts out 59.94 at 720P and 29.97 at 1080i.. I won't bother to set my my Radiance to 1080i because I am too lazy to mess with that. Trust me, either your display is broken or this genlock device is doing something weird. Any old cable box will put out 1080l at 29.97 and work just fine. I also have an HP x280n Windows Media Center Extender wihich ouputs 1080i at 29.97 4:2:2 and it work fine direct. I normally don't send anything to direct to my display as I usually have a VP inline. First was an Edge, then a DUO and now a Radiance it is my preference to do all the deinterlacing and scaling in the Video Processor.. but things synch just fine without the VPs.

You have an interesting piece of gear that is not typical consumer stuff, why it misbehaves on your set in your enviroment is anyone's guess..... but believe me 1080l at the standard refresh rate is not a problem. I also have an older HD-DVD player that could only output 1080i it also worked fine. It was a thousand dollar device in is day, Toshiba XA2. Actually I have other 1080i devices laying around that have been plugged directly into both my 2009 82837 and my 2011 92840 all worked without issue.... Two of them are external ATSC tuners.

I know you believe you are correct, but I'm posting what is true. I've since tried other 29.97 devices. It can't do 29.97
When I was on the phone with Mits, the fellow had to put me on hold twice, to get answers to the questions I was asking.

These questions were:

Does Mitsubishi support 1080i/29.97 via HDMI as well as 1080p? He didn't know and had to ask someone.

Then I asked about the other Mits DLP's that have been tested..... SOME WORKED WITH HDMI at 29.97 and some didn't!!! (and these were not 720p native DLP's) How would you explain that?

I was put on hold and when he returned, he confirmed some models will not work with 1080i/29.97 on HDMI, only OTA Tuner.

I would have been very happy if you were right, but you're not....

I'd strongly suggest you borrow some 29.97 hardware and test it.... I'm afraid you'll find exactly what I found.

The Email support thread from the Mits site has been removed, and that prevents me from reporting this to them.... Not that at this late date they'd do anything about it..... The product is end of life... Though I prefer making colors off of 6 colors plus Luminance...

As posted before, when I change the MXO2 to 720p/59.94 the Mits instantly locks to the image. So I do have a work around. (Albeit with cross conversion interlace to progressive artifacts).

At this point, it is what it is....
Edited by Jan J - 2/11/13 at 6:07am

when you were on the phone with Mits you had a moron on the line. What are you really trying to achieve anyway. The typical source of 1080i content is terrestrial broadcast either ATSC or QAM from a cable source. Those sources play fine when fed to a properly working Mits DLP rear projector.

Don't expect to get an even reasonably competent answers when you call Mits support.
Edited by gtgray - 2/12/13 at 1:10pm

I'm going to bring home much more hardware to test this, but the 73640 isn't the only Mits that can't take 1080i/29.97. I took my 10' HDMI cable that works on the 73640 at 1080p on my scan converter, I tried a couple older ones at work....
720p/59.94 works but not all work with 1080i/29.97.

The test signal generator I used is: http://www.lynx-technik.com/index.php?id=439
The HDSDI to HDMI Converter I used is: http://www.aja.com/en/products/mini-converters/hi5/#overview

I then tried the following HD formats, using my 10' HDMI Cable (Known good At 1080p ti my 73640) from the test generator at the shop at work, to "See what would happen" when I through Multiple HD Formats at a consumer TV. (A one year old Samsung TV that just happened to be in the shop).

Here's my results: (I'm expecting PAL HD not to work on a consumer TV)

720p/59.94 good
720p/60 good
720p/50 NG
720p/30 NG
720p/29.97 NG
720p/25 NG
720p/24 NG
720p/23.97 NG

1080i/60 good
1080i/59.94 good
1080i/50 NG
1080p/30 good
1080p/29.97 good
1080p/25 NG
1080p/24 good
1080p/23.97 NG
1080psf/25 NG
1080psf/24 NG
1080psf/23.97 NG

My intention is to get permission to bring the test generator home to test the Matrox system, along with the following test gear, for evaluation of the streams leaving the Matrox MXO2:

http://www.leaderamerica.com/web/products/video_monitor/lv5800.htm

This way, I can verify, without a doubt that the Matrox MXO2 is outputting legal HD Video, and put another nail into the Mitsubishi 73640... Which I'm willing to assume WILL receive 1080i/29.97 OTA through the tuner, but no via HDMI inputs....

As mentioned before, I already know the Mits cannot accept the 1080i/29.97

Thread is a little aged, but I thought I might get some help on some trouble I'm having with my 73640

Works fine most of the time, once in a while the screen will go black and I get the front green led fast flashing. Needs a power cycle to come back. Seems to be happening more often lately, and another symptom is the sound will just cut out. Nothing to the tv speakers or the coax output on the back. Same thing, needs a power cycle to get it back. Changing inputs or mute/unmute, etc doesnt help. Once in a while I hear a static pop just before the sound cuts out.

Pretty simple setup...directv hr24 to the tv with a decent hdmit cable, coax out to a receiver, but I wasn't ever using it when the pic or sound cut out.

Vents are clear, unit sits on a raised marble pedestal that makes an excellent heat sink.

Anyone have anything I can do or check before I try out Squaretrade for the first time? Glad I bought the +3 year warranty extension from Costco for $50...

Sorry, I don't know anything for sure... but as you hinted at with the 'clear vents/heat sink' comments, it almost seems like an over-heating issue. Or a failing power-board... very possibly just a cheap fuse that might need to be replaced. But the audio problems are odd.

Its done it a few times when the unit was cold, within a minute of starting it. Gave me fits the other day, dropping its sound within 10 seconds of turning on, then I turned it off, waited for the light to quit blinking and turned it on. Came almost on, then turned off with the fast flashing light. When I turned it on again, it lost the sound within a half minute. Then after pulling the plug after a shutdown, it turned on fine and hasn't been the least troublesome since. Watched it for ~6 hours yesterday,

The intermittency is annoying!

I was wondering if a cable problem or a grounding issue of some kind could be causing it. It seems like a power supply issue, but those usually aren't as intermittent and get worse with heat/use. Maybe I'll pull the coax audio out for a while and see if that improves it. I did have a problem with hdmi port #1 and a particular hdmi cable...it'd work on either of the other two ports but intermittently it wouldn't work on port #1.

I do have it on the latest firmware and it looks like there hasn't been anything new in close to a year.

I've seen that happen a couple times in the almost 2 years we've had it.... Any time of year, so it most likely isn't a temperature issue. Airflow is good, nothing blocked...but it keeps on working. so maybe it is a random reset built into firmware???

???

will these glasses work with this tv ?
3D IR Infrared Active Shutter Glasses for Samsung 3D: Description says "These glasses are intended for use with Samsung 3DTVs which use Active Shutter technology and IR (infrared) wireless connections. They feature an internal, rechargeable lithium-ion battery, which can hold a charge for up to 50 hours of use, so you won't need to watch TV with a USB cable plugged into your glasses.Each pair comes with an 18" micro USB cable for charging when not in use. They feature a 1000:1 contrast ratio and allow viewing angles up to 80 degrees from center."

I have this emitter already
http://www.amazon.com/Dimensional-3ACTIVE-Emitter-Compatible-Mitsubishi/dp/B005M3BIMO/ref=pd_sim_vg_2

Or if I ditch the emitter will these work too ? http://www.ebay.com/itm/SainSonic-2013-144Hz-3D-DLP-Link-IR-Active-Shutter-Rechargeable-Glasses-for-BenQ-/261206098514?pt=US_Video_Glasses&hash=item3cd118c252

Thanks in advance.
Edited by ianbotham - 4/30/13 at 3:38pm

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