How can I determined if the issue with my TV is definitively the panel instead of TCON/Main/Power board? The LEDs light, but nothing else appears. TV is an LG UH6030
I replaced the TCON after we found that the fuse had power, but none of the test points just before the panel ribbons. That didn't fix it. We then replaced the power board after finding that it the pins were putting out 8volts rather than 12... but it still output that after the change and we found we were still getting 13 at the new tcon fuse. Seems like it's either the panel itself or the the mainboard given that it's the only thing left, but I'd like to definitively determine if it's the panel.
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The series set you have has the power and main board as a combo and has had lots if failure issues so I'd try replacing this board, as long as your backlights stay on we can cross those off the list of possible issues
Chances are your T-con may be bad . I would check the backlight by shining a flashlight by the screen to look for an image on the screen . If an image is present, then the backlight is the problem. Your Tcon and main board could be ruled out, if this is the case . At this point check the power board for voltage to the led driver. The leds could have issues.
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
Hook the Tcon cable back up and do this. With a program running on the TV, shine a flashlight in the screen. If you can't see movement from the program, then the Tcon board is bad. you can get parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
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