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Jan 7, 2010 - 26 posts - 15 authors
Hi, I have a Samsung LN40A550 LCD TV which I have had for just over a year. ... I was watching TV yesterday and all of a sudden the picture went all. ... started makinga very high pitched buzzing sound with no picuture coming on. We did have a bunch of green vertical lines, but now just a black screen.
Turn off you computer and pull out your sound card if it is external. Then plug it back in the same hole. It may just be loose. If this does not help try another card. If you have a built in sound card try installing updated drivers for it from the manufacturers web site.
check in your manual and follow instructions on updating the software. you download the file to computer then move it to a memory stick (USB), then simply insert it into the tv
should replace capacitor ( c 1010 marked on board if it is a M134C chasie also (c 1013) both capastors are 10 mfd at 16 volts. Also check (Q603) rca part number 266897 could be bad.
Its over heating no cheap fix. But wait if u buy an eternal fan n place it on top or behind it will do the trick. Try blowing on top when static happens n sound comes back on.
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