Recently, my Mits WD-73736 started spontaneously switching viewing modes (normal, expanded, wide...) every few seconds, then it wouldn't turn on anymore. I replaced the lamp and the ballast board. This brought the TV back on line, but after about 20 minutes it starts spontaneously switching picture modes again. Not sure if these problems are related. Heat issue?

SOURCE: DLP TV turning on and off automatically - Mitsubishi WD-52327

1. Unit powers on and works properly for a while then shuts off with a red lamp LED (lamp error). Suspect bad lamp part # 915P020010 2. 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 3. 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 4. 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 5. 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 6. 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 # 930B929001

SOURCE: When turned on, my Mitsubishi TV shuts off after a few seconds.

the lamp is simple; yet you can run into problems with this tv. be very careful replacing lamp. the plug in the tv can be damaged. (due to the design)
lamp part #

915P028010

SOURCE: WD 52525

This is a sign of a failing capacitor set on the power board. there may have been a small or minimal pulse that went threw the set during the power outage and when the power was restored. this could also be overheating as well due to dust forming on the power boards components. i would remove the back cover and clean as much dust off the power board as possible with some sort of canned air if possible. make sure the cooling system is working properly as well.

please rate and god bless.

SOURCE: Blinking Green light after Capacitor kit replacement WD-62725

I just repaired two Mit WD-62725 sets in the last two weeks.
The first one had bad caps on the power board and the FMT board. The scond one had bad caps on four out of the five boards.
Also, on the FMT board, there was a blown surface-mount fuse.
I advise checking all of the boards for bad caps. If you fine a bad 1000uf cap, replace all of the 1000uf's on the board.
Hop this helps,
Dan

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SOURCE: Mitubishi WD 62725 - Ballast Problem??

Could be the FMT pcb or the Dm pcb board you should check the caps on them and replace any faulty ones.