Question about Televison & Video
TV WILL MAKE A HUMMING SOUND WHEN ON BESIDES THE FAINT PICTURE
It is difficult to know for sure without some testing - by a trained tech who knows what its all about. Trial and error troubleshooting can sometimes be a poor way to solve the problem.
Posted on Dec 11, 2014
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Posted on Jan 02, 2017
The old saying that a pictures is worth a thousand words could have been looking at this one... If the lower screen had been streaked in B&W or bands ran completely through the picture Old Drummer I would suspect the logic board also but that's lower y-board failure.
Posted on Nov 15, 2007
not sure what you're referring to as a "main board", but heres the LCD Control Board for the TV
Posted on Mar 13, 2009
SOURCE: Philips Magnavox 37" LCD Flat
Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.
Posted on Jul 07, 2009
Hello: The problem is on the power supply, there are two capacitors on the power supply near the plug that goes to the mainboard, these caps will look swollen at the top on them compared to the other capacitors in the circuit, if you know how to unsolder and resolder parts then this is a simple fix. The value of the capacitors on the board are 1000uf rated at 10 Volts, replace them with 1000uf rated at 16 Volts instead so this will not happen again. You can find them at any local electronics parts store, (Radio Shack) for instance..There will be two of them that look puffy at the top,they should all be flat so spotting them should be very easy...
Thks: Have a Happy Holiday...
Posted on Nov 22, 2009
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