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Hi my 55 inch JVC led tv model No LT-55N730 have sound but no picture

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  • JVC Master
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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/ 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.

Posted on Jan 03, 2017

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Posted on Jan 02, 2017

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My LG 55 inch smart tv has no picture. I can see the picture with a flashlight. And the voltage seems good on the LED. What might be the problem?


hi check the led driver board for dry joints, what is the voltage you tested, my guess is the led in the panel has shorted out, thanks

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The TCON board or the LCD panel is faulty, Can confirm by replacing the TCON board.
If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

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1 Answer

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Sound like the power supply board has gone out .Unplug the tv for 2 or 3 minutes and plug it in again and try to turn on. Some times they will come on .But It sounds like the PSB is going out .

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I have a jvc tv lcd model lt-42e488 the green


is a inverter control board defective, need to be replaced.

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