Question about LG 50PX1D 50 in. Plasma Television
Im guessing that the digital board is dead, or have a bad lamp.
Posted on Jan 02, 2008
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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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