Sony KDL-50-EX645 Starts up and runs perfect for 12 seconds then video goes away (audio is present) and Green power LED blinks once and set starts up (Sony logo, music etc.) and have perfect picture and audio. 12 seconds later repeats on/off. I've replaced all caps on PS board but C240A and C240B and main filter cap. Any ideas?
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Re: Sony KDL-50EX645
T-con board,can you take a picture of it,close up? I had this exact problem with a sony,let me dig up the thread...
https://www.badcaps.net/forum/showthread.php?t=52637Proud owner of dozens of broken TV's and many,many,many boards.
Our website and passion:http://hollenhundshepherds.com/
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I have a really weird problem, this motherboard was working normally, someday it just started and all fans were running but didn't want to post, tried resetting bios, checking CPU and it was getting warm tried external gpu, flashed bios with programmer, but same problem.
Next day after several attempts the board goes into protection mode, no more staying on, I turn on the PSU fans starts directly turning, it used to not start until I press the pwr button, now it starts directly and fans spins, and shuts off after 3 seconds sometimes less, then won't start again unless I unplug the PSU and... -
I'm currently working on repairing a malfunctioning Sony TV model KD-65XE7005 with the mainboard 1-981-926-21. I would appreciate your assistance with this issue.
Upon powering on the TV, the Sony logo appears for approximately 3 seconds, after which the backlight remains lit, the screen remains black, and nothing else happens. The TV consumes around 55W initially and then drops to 35W. The indicator LED remains solid white. It doesn't respond to the remote control. When attempting to update the TV using a USB dongle, the dongle briefly flashes but nothing else happens.
...05-21-2023, 11:56 PM -
Hi.! This Sony board turns off after 40-42 seconds.
(with adaptor/battery or both)
Don't turn on until 20 seconds,
If I disconnect Power immediately when off,than I can turn on, than again stays on same time, aprox 40 seconds
Did changed ,
thermal paste, CPU.
Flashed bios also.
fan heatsink also clean
Before turning off fan also turns on.
Any points I am missing
Thanks -
Hello,
LG OLED model 65B7V starts up with green screen for a few seconds then shuts down.
Can this be a sign of shorted ceramic caps in the T-con ?
Best, -
Diagnosed this TV as having a failed main board which I've replaced with one from a KDL 55HX850. They are (supposedly) the same board.
Being 'Smart TV' it requires a firmware reboot when you swap out boards such as T-Con or main board. It starts with a black screen and flashing yellow and green LEDS, indicating it needs that firmware boot. The procedure described all over the web is to put the software into the root directory of a FAT32 formatted USB drive and it should load that up once plugged into USB1 port. But not for me. I can see the LED on the USB chip flash for about...
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