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MY POWER WENT OUT AND MY TV WILL NOT TURN ON,IT JUST BLINKS CONSTANTLY I HAVE UNPLUGED FOR EXTENDED PERIODS,RESET,EVEN VACUUMED THE BACK OUT HOPE SOME WAS JUST LOOSE,AND HELP WOULD BE MUCH APPRECIATED.
CHUCK HODGES
Replace the dm power board . Its inside the metal box on the left (looking at the back with the back removed). p/n 935C986002 Or if you can solder then replace the 7 electrolytic capacitors on the DM power board. value 1000uf16v
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I unpluged mine and the light was still blinking when it was unpluged. I thought that was weird. So I pluged it back in and just heald the power button in untill the light went out. It went out within ten seconds. I pushed the power button again and the tv went on. WOOHOO!!! Just needed reset, I guess.
I found this answer and I believe it fits your problem perfectly.
Your TV has two microprocessors that depend on each other for communication. The problem is that a power glitch gets them out of sync. Try this:
1. Press the power button and wait for the blinking light to stop.
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2. Press all the front panel buttons one at a time, except for the reset, and power button.
This will send a command to one processor and sets an interrupt.
3. Hit the power button, and the TV should power up.
4. Set the TV to low energy mode(see TV manual to find out how to do this. Doing this step will help prevent the problem from coming back. These instructions were taken from a Mitsubishi service manual.
If the TV is turning on and working regularly, but power button does not shut down and buttons on TV do not work, then it is a faulty touch control (button) board on TV.
If instead the TV does not even turn on, then tv is on protection mode, in that case it can be any internal fault.
If instead the problem is with remote buttons, then it is either a faulty remote or a faulty IR sensor.
You need to change the seven capacitors on the DM power supply board (inside the metal case on the left where your DTV tuner connects)They are 1000 MFD 16 VOLT capacitors and the tops are probably bulging outward because they are leaky- this is a common problem.When you lost power,the TV had to reboot itself but because of the leaky caps it never will and the green light keeps blinking.As long as you never lost power or unplugged the set the TV would of still worked.Once you change the parts and plug the set in the light will blink normaly for about a minute and when it stops blinking you can then turn on the TV.
They are little green soldered in fuses located on the center board (the one with the STK's on it) toward the rear of the set near the large transformer.
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