My mitsubishi tv won't turn on - Mitsubishi WD-62525 62" Rear Projection HDTV

Check its power regulator board. Check fuse. replace it as card basis, if found irrepairable.

did you try new batteries in the remote? if the tv has buttons on the side and one of them being power di you try to push that? did you push tv power or cable power holding the buttons longer? those things might work.

GOT A MODEL NUMBER?

You could be having a problem with the power supply in the tv.....try testing it with a multi-meter.

IF model number posted is correct and green power light comes on for a few seconds and then goes off:
On front of set press and hold both the Menu and Input (device) buttons at the same time for at least five seconds and release both buttons.

Power light will then blink a two digit error code like 2 blinks, 2 blinks, a pause and repeat it several times.

Let me know what error code is found and I will tell you what it means.

SD TECH

Does the front light blink a pattern. If so this may be used to lookup the error codes.

Are there any lights lit on the front of the TV? Have you checked for a bad lamp? When you reset the TV the timer/power light should flash on and off rapidly for 60-70 sseconds. Does that happen?

have you checked the fuse at the back??...this just might be your problem. It is located on the power supply side of the motherboard.
Good luck and thanks for using Fixya.

G..

You have a bad DM board - the capacitors are bad and need to be replaced. I was able to replace them myself. There are no replacement parts available and many repairmen will charge hundreds of dollars and there is no guarantee they will fix it.