If you dont here anything then it sounds like the switching power supply or the horizontal output circuits not starting up. this requires troubleshooting with a variac, as well as maybe a scope. If your not trained to work on HI Voltage circuits you should seek assistance with this repair. Theres HI voltage inside these sets even after they are unplugged for a while. sorry i couldnt be of more assistance.
Mitsubishi TV troubleshooting
Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.
For example, 3 flashes, then 7 flashes = 37.
Here are the error codes, and the corresponding problem:
12 = No error detected, check power supply.
32 = Lamp Cover is open.
33 = Air filter cover is open.
34 = Lamp abnormality
36 = Light Engine (DMD or Lamp Fan stopped)
37 = Exhaust or Lamp Ballast Fan stopped
38 = Lamp Temperature High
39 = DMD Temperature High
41 = Short is detected
44 = DVI cable between FMT and Engine disconnected
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Started with going blank after a few minutes. We unplugged it for awhile and when it was plugged back in, it worked temporarily. Now the power light comes on but no picture or sound
Had a similar problem. TV would warm up then shut off.
Repair shop said the green light was blinking code "123". Then a couple of days later said they were waiting on a part. Now they say it's a bad power supply and it's not worth fixing.
Does that make sense?
Mine does close to the same thing green light on no picture or sound, but I can hear clicking. It will turn on then turn off. Called Magnavox was on hold for 25 minutes. No help.
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