SOURCE: ws-55511 power problem
Ok the 12 code means no error detected. Try this you will see three small wire plugs that run from the convergence yokes on the picture tubes. not the three big plugs, they will be real small plugs all identical. try unplugging them and then try powering up the set. But remember where each one was plugged so you can plug them back in correctly.
SOURCE: Mitsubishi TV WS-55511 Turns Off after Turning On
My mitsubishi big screen tv turns off in few seconds what should I do and I just got tv today please someone help
I had the same problem with the blinking light on the front of the TV and it would not power up. I read all the problems everyone was having and thought I was going to face a huge repair bill. The service guy came out, pulled off the front panel where the speakers are and disconnected the circuit for the front display panel. 3 1/2 minutes in my house, $90 service call. Apparently, when you give the TV too many commands at once, it's safety feature is to"shut down and lock up". He mentioned also that sometimes when these sets get to be about 4-5 years old, the wires in front can "leak" causing a shortage and then locking up the TV. I keep the circuit unplugged and operate the TV solely by the remote. Give it a try, what can it hurt!! Hope this helps.
replace the capacitors on the DM board. Heres a link to the repair kit which contains the replacement capacitors and instrucions of how to do the repair.
http://servicemanuals.vstore.ca/product_info.php/pName/v21v19-mitsubishi-dm-repair-kit/cName/repair-kits
SOURCE: My model is a WS-55511. I turn on the TV, the
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MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:
UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER
LIGHT COMES ON FOR A MOMENT AND GOES OFF.
PRESS AND HOLD “device” and “menu” buttons on front of tv
for at least 5 seconds and then release both together.
Watch for power light to blink in a sequence:
1 blink-then 2 blinks-------no error
2 blink-then 1 blink-------X-ray protection
2 blink-then 2 blink-------SHORT PROTECTION*******
2 blink-then 3 blink---------deflection circuit problem
2 blink-then 4 blink---------vertical circuit problem
******2, then 2 is most common---usually means one of the
fuses that protect the Convergence IC or IC’s is blown---set will detect no
voltage to convergence IC and shut down.
SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO
GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.
IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM
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