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mystery of Samsung UN40EH5000FXZA tv

 
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chancerocks
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PostPosted: Wed Feb 26, 2020 7:58 pm    Post subject: mystery of Samsung UN40EH5000FXZA tv Reply with quote

any help is greatly appreciated. My Samsung UN40EH5000FXZA tv went black... i replaced power board- nothing. Replaced main board- it turned on and worked.. for about 5 minutes before going black again. anyone have any idea of what the problem could be? thank you in advance
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jts1957



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PostPosted: Sat Feb 29, 2020 5:22 pm    Post subject: Reply with quote

And tho it's been said many times many ways ... BAD BULB(S).
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chancerocks
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PostPosted: Wed Mar 04, 2020 6:44 pm    Post subject: re: mystery of Samsung UN40EH5000FXZA tv Reply with quote

thank you for your reply. i have since replaced the power board on the tv, and frustratingly now i have backlights, but no picture.
as always any advice is greatly appreciated.
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chancerocks
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PostPosted: Fri Mar 06, 2020 8:35 pm    Post subject: Reply with quote

sorry i meant to say i replaced the tcon board. So I have replaced the power board, the main board, and the tcon board (all at the same time, all new boards). The current status of the tv is that it has a black screen, but when plugged into the power outlet and i disconnect the power board from the main board, the back lights all come on strongly. Black screen when power board and main board are connected, and nothing happens when I press the power button.
Thank you for any ideas!
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jts1957



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PostPosted: Fri Mar 06, 2020 10:27 pm    Post subject: Reply with quote

Quote:
(all at the same time, all new boards)

All boards 'New ... to you.'

See if remote sensor has 3.3/5V. If NO, Main board still bad/bad again.
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