20 Most Recent Mitsubishi WD-57731 57" Projection HDTV - Page 3 Questions & Answers

Replace the lamp.

You have a dm board problem could be the capacitors or you may need to change the entire board.

Mitsubishi has had some problems with these sets with the lamp cartridge(google the model number and look for how to replace lamp instructions) On some of the lamp cartridges they covered several openings with a fine screen like material---one is narrow and completely blocks up with dust---this will trigger the air flow message--if you get the lamp out and this screen is blocked, carefully clean the dirt off with a brush---if you don't get it soon enough it will kill the lamp----the replacement lamps for these sets use a bigger mesh that does not block with dirt---it blocks because there is a fan the pulls air and dirt into the set to cool the lamp during operation.


NEVER TOUCH THE FRONT GLASS OF THE LAMP WITH YOUR HAND

I do this here for free so if this helps you give me a vote here.

There is really nothing you can do to get rid of the water mark.Unit considered to have water/moisture damage

The whirring is the fan. The clicking is the spark gap on the ballast releasing the unspent voltage trying to fire on your lamp.

Check your lamp; it may be unseated (unlikely) or just blown/bad (likely).

Mirror in the set-approx $75.00
Front Screen- approx $200.00

Hi,
Make sure lamp cover is installed securely after lamp replacement in TV.
And if TV still does not power up to give picture and sound then ballast supply could be bad. In that case you should have repair manual copy to check ballast supply input volts.
Repair manual can be downloaded from HERE for small fee.
Thanks.

The bulb was the problem with my set.

Mitsubishi had a problem with the power board in a lot of the DLP sets. The fans would not turn on when they were supposed to, and the lamp would create too much heat. Call mistubishi support, have your model and serial numbers handy. Sometimes they will warranty this problem een after the 1yr warranty has expired.

YES CALL YOUR LOCAL BESTBUY OR ELECTRONICS STORE

This is an ongoing problem with Mitsubishi DLP HDTV's contact the Customer Service at 1-800-332-211. Tell them this has been going on for a while and you want the TV either Fixed or Replaced. Ask for Adrianne Hardt, she is a Customer Service Manager...... TELL HER RICK GRIFFITH told you to call.

I am in the 4th week negociations with Mitsubishi over these exact problems. I purchased my 57" DLP HDTV in Aug of 06. Replaced the Lamp 3 times and have had 5 Service calls. I DO NOT have and extended Warranty. Mitsubishi provided me with the extention in writing and stated if any problem occurred again they would replace the Unit or provided monetary compensation.

Good Luck and be persistant.

Any of you can email me for from info and [email protected]

I got mine off ebay for $96.93 for the bulb only including shipping. Here is the URL:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=390000253290

You will have to take out the lamp from the back, very easy, then open the housing and replace the bulb. Here is a video:
http://www.youtube.com/watch?v=Og3BJu7bBQs

Get a can of compressed air and clean out the screens on the lamp housing...you should do this monthly anyway

check if there is a message before it turns off.
if there is call mitsubishi consumer relations for more info.

The USB port is for updates, I am not sure how to update the television? However it is my understanding that it doesn't read MP3 or other media players, However there are several DVD players that read media devices.

Definitely. The lamp often looses oomph before it goes. Think about how long you have had your set. The average life seems to be around 2 years. Eventually your set will indicate the lamp needs replacing, if it hasn't already. I see your posting is about 6 months ago. Are you willing to verify for everyone else?

It is a common failure of the 57" Mits. DLP. The problem is a defective thermistor and is covered by Mits. Contact a local repair shop and they will fix it free (parts & labor)

I would buy a Surround Sound system. It would probably be cheaper than having the problem fixed.

That problem with the "AIRFLOW Blocked" is now covered by Mitsubishi (parts & labor) Contact a good repair shop and they should fix it free. I had that same problem the tech came out and fixed it in about 30min.

There is a list of things you need to check, but offhand I'd say that the 5 volt line is low and probably right on the"edge", which is why it works sometimes and not others take a look at this list:
Cause #1
1. (Lamp may light and go out) suspect bad lamp part # 915P020010 2. Check for
12-volts DC at J-9 connector pin 4 on the Engine Driver PCB, if missing check
for an open F9A09 on the Power PCB, if it is open replace F9A09 part #
283P127060 and the Light Engine part # 939P977010 3. (Lamp may light and go out)
Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if
low or missing check C9A37 and C9A38 both 3300 UFD 10 V part # 181P732040 on the
Power PCB (part # 930B921002) 4. At power on the lamp turns on and off three
times and then the unit shuts down with a red lamp LED (lamp error). Replace the
Light Engine part # 939P977010 5. Lamp enable line at J14 pin 6 does not switch
to 5 volts after turn on, 12 and 5 volt supplies are good. Suspect the Light
Engine part # 939P977010 6. Lamp enable line at connector J14 pin 6 on the
Engine Driver PCB switches to 5 volts after turn on and does go to 0-volts (low)
after 5 seconds, 12 and 5 volt supplies are good. Suspect the Lamp Power PCB
(ballast) part # 939P978010 7. Lamp enable line at connector J14 pin 6 on the
Engine Driver PCB switches to 5 volts after turn on but does not go back to 0-
volts (low) after 5 seconds, 12 and 5 volt supplies are good. Suspect the Light
Engine part # 939P977010

I would say try #3 first, the two caps on the pwer supply board. A couple of warnings: as always, unplug the unit before servicing. The power supply is located on the left side, if you behind the unit. It is in a shielded box and the shield has VERY SHARP EDGES so use care when you try to open it or you will slice your fingers.
Please be sure to rate this solution. Thanks!