Question about Mitsubishi WS-55857 55" Rear Projection Television

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Sw-55857 issue I have a Mitsubishi sw-55857 55 in, and recently started acting up turn on but after 30 minute, and the video signal goes off and i leave along a turn it on a few minutes later and work fine for another 30 to 45 minutes and so on, but now I can hear the audio but not pic at all, I have the Service manual, and the Schematic Diagrams anyone can help me out what to look for?

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Check the projection bulb

Posted on Aug 10, 2008

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When i turn on my mitsubishi ws-55857 it turns off after a few seconds. should i call a repair guy???? i am a handyman??/ what should i do


Hello

this has two general failures that cause this type of problem... The first and easiest is that when the bulb gets older the tv's start turning off by themselves. Pop in a new bulb and the problem goes away. The second is a power supply issue, and those are generally available on ebay or shopjimmy. If you like the tv, I would find a new bulb ...

Best of luck

Nov 26, 2010 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

Mitsubishi WS-55857 turn on/auto turn off problem


After it shuts off, you need to get a code from the tv by pressing the menu and device buttons together for 5 sec. A code will flash at you made up of 2 digits. Example. 2 flashes a pause and 2 flashes points to a convergence failure. If this is not your code post yours and I will help you.

Jul 06, 2010 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

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Hello Rodfamy:

You will need to look in the small signal board section of your service manual.

Aug 10, 2008 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

Mitsubishi WS-65809 turns off right away


check the collector drop on Q29a002. If it is less than 16 nano amps, repl ic u12 in conver circuit. stk392-570 and pico fuses f04 and f05 24v circ

Jul 28, 2008 | Mitsubishi WS-55857 55" Rear Projection...

3 Answers

Mitsubishi WS-55857 won't turn on


Thank you for posting your concern details however i would be needing few more details from your side if necessary and allow me few mins to come up with the resolution.

May 19, 2008 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

Mitsubishi WS-55857 55 in connection problem


there is a setting in the menu under setup i believe it is called
"LABEL VIDEO INPUTS". check you owners manual. you need to make sure that
the DTV input is set to YPbPr NOT RGB.

Feb 22, 2008 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

Mitsubishi WS-55857 55 Turns off


I have the same problem and it is costing me $300 to fix it. Not that big of a deal but a pain none-the-less. I'm sure we aren't the only ones that have found defects with this television set.

Jan 28, 2008 | Mitsubishi WS-55857 55" Rear Projection...

1 Answer

Mitsubishi platinum plus ws-55857


Solder connects = temporary fix.......Replace IC's..best
order two STK392-570 good quality.....16 to 22.00 each
...............................T.

Dec 26, 2007 | Mitsubishi WS-55809 55" Rear Projection...

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