Full model of the TV is 65UJ6300-UA.BUSYLOR. TV was given to me by a relative as non-operational so I'm trying to get it working so I have a nice cheap upgrade for my living room. This is my first TV repair so if it sounds a little like I know what I'm talking about, I don't.
TV turns on and has audio, but backlight doesn't turn on. Getting 230v from LED+ to chassis. Also can't see anything with flashlight test. Another forum suggested I replace the LED strips because that's the most common failure on LG TV's and the flashlight test doesn't always show results.
Replaced LED strips. Powered TV on with TCON disconnected so I can test to see if the LED's were working before reinstalling panel, and they came on. Reassembled TV. Same problem as before. Disconnected TCON from main board again, backlights come on. Reconnected TCON to main and then tried disconnecting the two cables from TCON to panel. No lights.
So basically the backlights only come on with the TCON disconnected from the main board.
So....bad TCON?
I tried finding a schematic for this TV and came up with nothing. I did find a repair manual for one that uses the same power supply board and did voltage tests according to that and everything seems in spec. Any help would be appreciated.
TV turns on and has audio, but backlight doesn't turn on. Getting 230v from LED+ to chassis. Also can't see anything with flashlight test. Another forum suggested I replace the LED strips because that's the most common failure on LG TV's and the flashlight test doesn't always show results.
Replaced LED strips. Powered TV on with TCON disconnected so I can test to see if the LED's were working before reinstalling panel, and they came on. Reassembled TV. Same problem as before. Disconnected TCON from main board again, backlights come on. Reconnected TCON to main and then tried disconnecting the two cables from TCON to panel. No lights.
So basically the backlights only come on with the TCON disconnected from the main board.
So....bad TCON?
I tried finding a schematic for this TV and came up with nothing. I did find a repair manual for one that uses the same power supply board and did voltage tests according to that and everything seems in spec. Any help would be appreciated.
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