Question about Samsung LN-S4692D 46 in. LCD HDTV

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Sound, but no picture

Picture went out. Had sears come out. Diagnosed as a main board failure. We ordered the parts and installed them with no change. Sears came out again. Said they do not know what the problem might be the display which is $2k part and not available. Very frustrated. Has anyone with this same problem gotten their tv fixed and what was the problem/part. Any advice help greatly appreciate!!

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Re: Sound, but no picture

The problem with your tv (if youve allready replaced the main board) is you have a backlight failure. the board that powers your backlights is called the inverter board. this board only comes with the panel itself and cannot be bought as a single item. if you have any more questions feel free to contact me....

Posted on Oct 17, 2007

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Hi Chad,
Since you are getting the sound, the main board seems ok. Please show a flashlight on the screen, you should be able to see the picture there. If it is so, the backlights in your set are not working. Most LED TVs have LED driver circuit on the power board now days. Here a word of caution, there are two reasons for failed backlights. First the LED driving circuit and second the backlight itself. Which one has in your case, let some TV Tech decide it. In both the conditions your TV should be repairable.
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