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    LCD tv power/inverter board

    If by the rails you mean the 12vdc to the main board then yes, everything tests fine from the power supply/inverter board. The tcon board is the timer control board of the actual LCD screen. I figure if I see the backlight power up, hear the speakers, it mustn't be the inverter or main...
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    LCD tv power/inverter board

    Here's an updated. Finally decided to bring the 2 boards to some one that knows what they are doing. Turns out there was an ic on the hot side that was burnt and also a dead diode near the opto-coupler. So we made one board from two.* Backlight now functions, as in I see it light up but...
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    LCD tv power/inverter board

    Thanks for all the useful info, it is greatly appreciated. It does seem like I am biting off to much to chew but think I will keep at it for sometime. I did test the big cap on both boards and got 168vdc. I did some other poking around with my multimeter and found that I got 10vdc coming...
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    LCD tv power/inverter board

    The black stuff near the bar code is the remnants of the me4542 chip. It exploded from it corner. Also if you look at the top right side of the same board you'll notice a burn mark from the transformer arcing. Not sure if this is serious, definitely not good but the ps still works...
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    LCD tv power/inverter board

    Yes we are still talking about the second, the one that is not functioning. The bridge rectifier test ok. Just to be sure i tested both boards with the BR onboard.(hope this is ok) Here are a few pics. the board on the right is the original and the other is the replacement which i got...
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    LCD tv power/inverter board

    Follow up question To test the different component on the ps side of the board is it possible to do this while still on board or do I have to remove each one and test them individually. So far I get 120 ac coming into from mains then I get a 60 vac after the transformer(step down I believe)...
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    LCD tv power/inverter board

    Totally new at pcb repair but think there's a possibility in doing the repair myself, just not sure what to do next. Any help or suggestions would be appreciated. Problem, 19 inch haier tv powers up, red green flashing light, then constant green but no image or sound. I've located a burn...
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