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Old September 23rd, 2006, 01:29 AM   #1
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LCD monitor makes CRT-like hiss: is that normal ?

I have a Panasonic LCD BT-LH17000W monitor but I noticed a hi-frequency noise from the back of the unit - kind of like an "electrical hiss". I was just wondering if this was normal for a LCD, since it reminds me of the kind of noise a CRT makes !
Anybody works with that monitor ?
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Old September 23rd, 2006, 02:26 AM   #2
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Probably it's inverter making that noise. It generates high voltage for screen. There is small transformer inside inverter. That could make a noise. In my eyes it is a warranty case. Inverter should be replaced.
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Old September 23rd, 2006, 07:16 AM   #3
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Might be a high frequency noise almost out of your hearing range. CRT tubes warming up on old black and white Philips TV sets used to almost send me insane when I was a kid. ( On reflection, maybe they did. ). If you have children, ask them. They may well hear a clean extremely high pitched whistle.

It may be a fault but it might also be a normal operating state.
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Old October 21st, 2006, 11:15 AM   #4
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There were a problem with the monitor. I had it changed.
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