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-   -   LCD monitor makes CRT-like hiss: is that normal ? (http://www.dvinfo.net/forum/view-video-display-hardware-software/76060-lcd-monitor-makes-crt-like-hiss-normal.html)

Steven Nichols September 23rd, 2006 01:29 AM

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 ?

Frank Hool September 23rd, 2006 02:26 AM

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.

Bob Hart September 23rd, 2006 07:16 AM

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.

Steven Nichols October 21st, 2006 11:15 AM

There were a problem with the monitor. I had it changed.


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