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HOW CAN I REPAIR A PHILIPS 42INCH TV WITH NO BACKLIGHT

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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://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should be troubles hooted. Contact any service technician. The circuit will differ with models and versions.
It will be best to contact the authorized service center for Philips in this case.

Posted on Apr 01, 2015

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Hi Harold,
No back lights means the inverter is not working. Well if you can do, please check the supply voltages and the necessary commands ie " inverter on and backlight control" on the inverter card. The needed voltages will be printed near the connector on the inverter board. If these voltages are ok then the inverter board is bad and if any of these are missing you have to look into the board from which the missing voltage is coming. If you can not do all this, try putting a new inverter card. Good luck

Posted on Apr 01, 2015

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Providing it is backlit and not oled or other The inverters hold the backlight in each and can be obtained via eBay for most make and models.best to put the screen on a folded blanket on the floor before attempting to remove back.make sure the power is off and that you don't touch internals.then inspect each invertor count the number for the screen best to replace all together or you will get uneven illumination.

Posted on Apr 01, 2015

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Posted on Jan 02, 2017

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