Hi all,
I have a Sony KDL-70W830B 3D TV where it turns on, the front LED flashes 4 times, then it shuts off.
According to Google searches:
I also see that @jeffer76 had what sounds like the same problem in this thread:
https://www.badcaps.net/forum/showthread.php?t=82306
It displays the menu and even the app selection screen briefly (< 5 sec) before it turns off, so this tells me that the LCD hardware itself is fine (I think; please correct me if I'm wrong).
I'm not afraid to take things apart and work on them, but what I don't want to do is spend hundreds of dollars throwing parts at the problem. A set of replacement backlight strips on ShopJimmy are about $100, but I want to make sure that's the correct fix first.
...so what I'd like to ask is, what tests can I do with a multimeter to determine if the backlight strips themselves are bad, the inverter board, or something else like the LED Driver board or T-Con board.
Any repair experts here that can tell me what to test?
Thanks a bunch!
-Wes
I have a Sony KDL-70W830B 3D TV where it turns on, the front LED flashes 4 times, then it shuts off.
According to Google searches:
....a 4 blink code means either the backlight inverter board is bad or one of the backlights in the LCD panel has failed. It can also be the LD board or main logic board, check inverter board wires for arcing to ground.
https://www.badcaps.net/forum/showthread.php?t=82306
It displays the menu and even the app selection screen briefly (< 5 sec) before it turns off, so this tells me that the LCD hardware itself is fine (I think; please correct me if I'm wrong).
I'm not afraid to take things apart and work on them, but what I don't want to do is spend hundreds of dollars throwing parts at the problem. A set of replacement backlight strips on ShopJimmy are about $100, but I want to make sure that's the correct fix first.
...so what I'd like to ask is, what tests can I do with a multimeter to determine if the backlight strips themselves are bad, the inverter board, or something else like the LED Driver board or T-Con board.
Any repair experts here that can tell me what to test?
Thanks a bunch!
-Wes
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