Question about Samsung SP-R4232 42 in. Plasma HDTV

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TV was fine but screen went totally black while watching. Audio is OK. Fuses OK. Can't access menu, change input selection, etc.

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I have samsung 40" LCD tv and it's happening the same thing. I turned it on and it last for 5 minutes and the screen went back but the audio is fine. I turned off and turned it back on it worked fine but an hour later it happen again.

Posted on Jan 16, 2008

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Has audio, but why did screen go black?

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It is a LCD set and if sound get it in a very dark room and with a flashlight and the set on look to see if you see a very faint image on the screen.

Almost all these sets use a back light system for brightness---an inverter of some type to power the lights---either the back light is bad or the voltage for it is not present or being turned on.

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The black screen with audio working ok is the inverter card.
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The inverter provides the high voltage necessary to drive the cold cathode lighting.

A new card is about $180 but shud save having to dump the set.
Card is located on left side of the display (as viewed from the back).


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It sounds like you have tried changing imputs " usually the issue". The next step is to see if it is still under warranty and get an estimate of how much it will cost to fix. Invest in a good surge protector.

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This model has several defective boards and eprom chip. There is an upgrade kit. I'll attach the kit part number and upgrade instructions.

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Have Audio, and backlights, but still no video on Polaroid 3732

try the diffrent inputs HDMI Composite component and see if the video comes on there are 4-10 diffrent inputs on these sets and make sure you select the right input on the menu the remote has a button for inputs a menu comes up and make your selection from there for the right input that you have connected to the tv most menus have TV (air) HDTV (air) video 1-6 HDMI and VGA

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