Mitsubishi WD-52525 was working fine and now it will not turn on

I think that would be the digital video(formatter) board. Possible bad capacitor syndrome. Goog " bad caps and model."

could be your PS3 thats what mine does! not the TV!

did you remove any covers,lamp or filter? unplug for a few and try again!

Sounds very likely that the lamp may have blown.

mitsubishi will rebuild the chasis for $200 with a 6 month warranty
mits.parts 1-800-553-7278
fax 1-706-654-4299

If i am to understand this correctly, this is a rear projection television. Inside there may be 1 - 3 " color " control boards that control the picture before going on to the projector. an accumulation of dust / dirt / debris has adverse affects on electronic componants, make sure they are dust free (compressed air cleans them off quite well. If using a home compressor, make sure there is a vapor filter to remove water from the airlines.)

If they are clean, and as you said you recently had the television serviced to replace the projection lamp, take the television back to the repair shop to have them determine the problem.

If you yourself replaced the projection lamp, be sure to check all connections are properly seated if you had to disconnect something, make sure they are in the proper places, and any connections are securely connected.

If all else fails, have a local electronics / television repair person check the unit for faulty componants.

The green CRT's (color picutre tube or color wheel, or ballast) will need to be tested for replacement.
It is quite common with these tv's

You will need an ohmmeter and or voltmeter and test each component for currency and accuracy

If you hear a whining noise, the odds are it is the color wheel, the bearings are bad in it and will need to be replaced as a whole unit, kinda pricey, my suggestion, sale the bulb and all boards in it and which should fetch about 400+ and invest in a new TV, a color wheel is pricey unless you can find a deal

does the picture clear?if does,check the sound output from the earphone if it is clear,if the sound is clear the problem is in the audio amplifier

Mitsubishi gives this error , when it does not detect a video signal.....Check your wiring.