Question about Mitsubishi WD Televison & Video

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Mitsubishi wd65736 has a dark bar across top screen

Installed a dlp chip and a new bulb turned tv on and has a dark tint at top of screen

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  • 114 Answers

If the old lamp still works, I would try it and check results... it may be dim, but if the dark bar is gone then the new lamp (or the lamp housing) is either defective or misaligned. On the Mitsu WD65736 there are two options for lamp replacement, either (1) you can just replace the lamp itself or (2) for just a few dollars more you can obtain a complete lamp cartridge (module) with the lamp already installed. I recommend the latter method because you must not *ever* touch the lamp bulb with your bare fingers, as to do so will significantly shorten the life of the new lamp.
Also try pulling out the lamp module and inspect it as well as where it plugs in on the back of the TV.

Why did you change the chip? If you got the replacement chip the legal way (direct from Mitsubishi parts) I would get on the phone with them. Mitsu generally won't send out a replacement flash chip unless you open a repair ticket with them for a known/documented problem for which they have a patch. Note well that they will otherwise *NOT* give you the latest firmware without a reason. Simply wanting to have the latest & greatest is not considered a valid reason. On the other hand, if someone shared their flash ram with you and you burned your own chip, then you are on your own. Just the act of inserting the new chip will cause it to download the new image from the chip and then automatically erase the chip Hopefully you backed up your original flash chip and can go back to the original firmware. FWIW, the **only** Mitsu firmware patch I'm aware of for this particular model had something to do with being unable to pair it with a cable card.

If all else fails, there is a very extensive (thousands of posts) on AVSFORUM dot com for the Mitsubishi WD series. Search for your model. One of the posters there even did a full documentation along with pictures showing how to disassemble & clean the lense assy. Don't bother asking for firmware there as it is a violation of avs forum board ethics for any member to post links to or share copyrighted firmware. Good luck!!!

Posted on Dec 01, 2014

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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SOURCE: Dark picture problem

did you change the lamp with an original or bulb only - mitsubishi only sells the lamp and housing!!!
never use generic

Posted on Oct 16, 2008

electronick
  • 505 Answers

SOURCE: Toshiba 52HM84 DLP TV with new bulb but the lights keep blinking

They exact way the lights blink are telling you what the failure is. If the tv is firing the lamp and the lamp is bad, you will hear a buzz sound for about 1 second. The tv tries 8 times before it gives up and spits out the lamp error. Check the user manual for led diagnostics. If you put in a new lamp but still have issues, you've likely got a bad ballast (most common on this model) or colorwheel (less common). Both are part of the optical block (light engine) and I don't believe they're available as individual components from toshiba.

Posted on Dec 06, 2008

  • 1039 Answers

SOURCE: Mitsubishi 57" DLP. Replaced bulb, now picture is hazy.

Cleaning th mirror and lense will remove the haze. This oldel is much older that 2 years though.

Posted on Apr 25, 2009

  • 11 Answers

SOURCE: Dark picture problem

there are 2 mirrors did you clean both there is one down in front near the light source when front screen removed lean in and look down there is another smaller mirrorclean it

Posted on Jul 07, 2009

  • 3741 Answers

SOURCE: DLP RCA HDTV is displaying

dust going in the inner layer of screen is very rare as due to dust in the screen and on mirror the screen becomes black or picture looks blurry/dim.but if the picture is only having green tint on the screen then its due to weak or bad light engine.so the light engine has to be replaced.also if the bulb in the tv is not properly fixed or moved from its position or fitted loose the problem may occur.but first light has to be replaced and checked if still the same problem remove and reset the bulb again then check out this will help.as you have already sent the light engine for replacement so get it checked with new replacement light engine.mostly this will solve the issue.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Posted on Nov 17, 2009

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I still get a blank screen after replacing DLP chip and lamp. Any suggestions. Can you use cleaning duster to clean?


is the lamp turning on, if not then there may be a problem with the inverter board. or the bulb is faulty, bulbs can become faulty in transit.

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2_23_2013_5_55_48_pm.jpg
Check the post how to place it diy

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Looks like a black thumbprint blocking 1/3 of the screen. No LED's lit on front of TV. Started as black dots, and filled in almost completely. Initial lamp lasted 2 years. The replacement lamp lasted 3...


It looks like DLP chip is failing. It is installed on DMD board that in turn belongs to optical engine. Issue should get progressively worse. If you look at screen up close - you see that "tumbprint" consist of little small dark-gray squares, some of them flickering.
Cheapest solution - to replace DLP chip. instead of replacing whole optical engine.
This repair have to be confirmed (by running test patterns in service mode first) and done by professional.
Repair could cost aroung $400.
During procedure I would recommend to turn ceiling fans and other air blowing devices off. Single little dust speckle landing on the chip surface will ruing all effort and same amount of labor have to be applied yet again just to get rid of it (been there, done it).
Good luck.
Russ.

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DLP RCA HDTV is displaying bars from top to bottom of screen, with green tint. Is this the light engine going bad?


Hi

Thanks for using FixYa. This issue can happen due to a faulty light engine or due to a a faulty DLP Lamp. However, it can be an issue with the video driver card of your Card. I'll suggest to use a DVD player and check if the tint is still there. If the tint disappears then its an issue with the video driver card.
However, if it doesn't correct the issue its either a DLP Lamp or a faulty light engine.
Note-- Please make sure to turn off and unplug the TV for at least 1 hour (this will drain off current from all components especially capacitors) before you perform any repairs. Also note that the TV consists of very high voltages even when it is in OFF condition.

Before performing any repairs i'll suggest you to try and reset the TV by unplugging it for 8-10 hours.

Please do accept the solution if the issue is resolved or else revert for further assistance.

Thanks
Rylee

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2 Answers

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Most likely cause of your trouble is dust on the small mirror inside you set. Your DLP set has 2 mirrors not including the DLP chip itself which has about 500,000 tiny mirrors. The 2 mirrors reflect the DLP chip image to the screen you view. The first is the main suspect it's about 4inches by 7inches. It's mounted on the bottom center facing backwards. This mirror faces slightly up and somtimes after time dust, smoke, dirt settles on it . The second fills the space of the entire back of the cabinet but it faces down and takes alot longer to get dirty.
The compartment is sealed but dust seems to find it's way in. If you remove the screws that secure the screen assembly from the top , sides and bottom. Make sure to have a friend available the screen assembly is delicate when it's not mounted to the cabinet. You can remove and clean the mirrors. These mirrors are glass and you can use glass cleaned. Don't use glass cleaner on the screen it's plastic. You can clean it if necessary with plastic cleaner only. Probably not needed.
Good luck.

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1 Answer

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the issue is the optical block. replace the optical block

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It sounds like you need to buy a new bulb, this is what usually happens when the bulb is burning out this bulbs are made to last 6000-8000 life hours

http://www.discount-merchant.com/

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