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TV turns itself off after 30 seconds. Infinite blinking red light.
I have a TX L50-EM6E Panasonic television. If you plug in the TV it will turn on for about 30 seconds with the green LED indicator at the bottom of the television set. All of a sudden the TV will shut itself off and the once green LED now slowly blinks red. The blinks seem to last without end (atleast 16+). I opened up the set and took a look at the boards and didn’t see any large amount dust build up, neither did I see any clearly fried or damaged pieces. I’ve done a good amount of research but I can’t find an exact equivalent issue that has been reported before. I have a video of the on/off process that I’m happy to share if necessary. I’ll include some pictures I took of the boards. Maybe I overlooked a piece. Thanks for any help!
ANSWERS:
"@mchughs let’s try and see if you can access the Service Mode function:
How to enter into Service Mode
While pressing [VOLUME ( - )] button on the main unit, press the [RED] button on the remote control for 3 times within 2 seconds.
How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
Once you are in Service Mode choose
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Here you should get a columnar display with SRV-TOOL being the first column. See if there is anything in that column. It’s your TV’s error history file.
Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication will be cleared by [Self/check indication and forced to factory shipment setting].
Power ON Time, On/Off
Note: To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time: Cumulative power on time, indicated hour: minute by decimal.
On/Off: Number of On/Off switching by decimal.
Note: This indication will not be cleared by either of the self-checks or any other command.
Exit
Disconnect the AC cord from wall outlet or switch off the power with [Power] button on the main unit.
How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
Of course you can also try the self check:
Self Check
How to access
Self-check indication only:
While pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control.
Self-check indication and forced to factory shipment setting:
While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
(Let us know what you see on that.)
How to exit
Switch off the power with the [POWER] button on the main unit.
All of these checks of course will only work if your power stays on long enough. From what you are describing and the way your TV behaves I’d go with a bad main board as a primary failure and the power board secondary.
Let us know when you may have a meter so we can try and figure this out."
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