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.
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Re: mts ws 65869
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 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.
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.
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.
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB. 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT.