Question about Samsung SPN4235 42 in. Plasma HDTV

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SPN 4235: Picture goes off

For the past year or so for no reason the picture goes black but sound is there, not noise, you can turn the volume up or down, and all other functions work fine. I learned early on that a gentle tap to the upper right corner of the back cover brings the picture back. there is no telling when it will happen again. it could be 4 time in a day and nothing in two weeks. is there a loose connection or cracked board. why tapping helps? is it due to get worse?

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COULD BE A LOOSE CABLE CONNECTION, NEED TO TAKE OFF THE BACK OF THE UNIT TO BE ABLE TO SEE IT, IF YOU ARE NOT QUALIFIED THEN BETTER HAVE SOME EXPERIENCE ON HAND TO ASSIST

Posted on Dec 26, 2008

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Check its back-light inverter board and its supply input.

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SPN 4235: Picture goes off


It is a loose connection, need to open the unit and the tap on the board and cables connected to check the loose connection. be careful to use a rubber gloves.

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DOES THE HDMI INPUT WORK, IF SO USE IT, OR REPLACE THE MAIN BOARD

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It could be the mainboard is damaged, but in order to be more specific I need a little bit more details on symptoms.

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www.mcveyelectronics.com

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1 Answer

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It seems you have loose or cold solder joint connection problem,causing a cracking sound.The solution is to reworks or resolder the solder joint connection in power supply section, audio section and inverter section...

Hope this may help you;

Regards,
VOTIT

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