I own a Samsung LN-S4695D LCD 1080P 46" TV. My problem was described to me by a salesperson at Best Buy as a "60 second hum cycle". Basically I am seeing two defined horizontal bars separated by about 12" of a faint ghosting. What i
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ANSWERS: 4
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You ran out of space on your question. I suspect what the man said/meant was 'a 60 cycle hum' AC runs at a frequency of 60 cycles per second. The power supply in your set is designed to regulate and rectify the voltage and to filter out the AC hum. I would guess you have a power supply problem. Either the filter capacitors or the rectifiers have taken a dump. You didn't say how old the set was. Suffice it to say, 'they don't build 'em like they used to' They just aren't built to last more than a few years anymore. You could check on your warranty but you would probably be better off just getting a new one.
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unhook everything from the set and see if the problem is still there, then reattach items one at a time - most often this is caused by a bad catv box and not the tv
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There's very little chance of an LCD TV having a "60 cycle hum". That problem was a hazard of CRT TVs and is rarely seen on LCD TVs and even when it is, it's mainly a problem with the RF feed and not the TV itself. Try hooking up various inputs one at a time. For example try component input from a VHS tape player. Then try HDMI input for a HD player (Blu-Ray or HD-DVD). Then try a computer hooked up to the VGA input (set your video output on the computer for the native resoilution of your TV). Make sure you have the inputs selected correctly for each source. The standard "refresh" rate for your TV is 60 Hz but that is a bit of a misnomer as LCD TVs don't used a raster scan for their display so their "refresh" is typically measured in miliseconds, in your case it is 8ms. Your problem could be a power supply problem or if the lines are static, it could be an addressing problem in the ATSC decoder chip. There are many other possiblilities but with more data on your symptoms, I wouldn't like to guess. Hope this helps.
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