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got hold of this 42 inch LG 42LW450U 3D LED tv today, now my problem is, i have sound and i have back lights, so the tv is working apart from the picture,
touching the buttons do what there supposed to do, and the remote works as well, so im 80% sure its not the main board thats the problem, so maybe the T-CON, im getting 12v at both ends of the fuse on the T-CON,
what do you guys think, i would love someone in the UK to say, i have a t-con you can try, as i dont fancy paying out for one, and then finding out its the main board, and there not cheap. -
Hi,
I'm troubleshooting another TV that has no backlight or picture. Standby light comes on, and TV can be turned on with all PSU voltages available. I've followed the procedures to jump start the backlight, and that works ok but there was still no picture.
All PSU voltages appear normal.
Suspected mainboard and have been following the schematics checking voltages. Haven't found any missing voltages on the mainboard but have discovered that it's a MICOM microcontroller that starts the TV up. It's sending the PSU turn on signal ok, but the INV_CTL or (INV_ON) is...
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