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- Monitor High Pitch Whistle
May 2, 2005, 1:32 pm
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A friends monitor is occasionally emitting a pretty uncomfortable high
You can give it a knock and it may drop the intensity a bit, but will
often come back again later. Changing the display width also may reduce
it for a while but he says it is still there.
I assume it is a physical problem yes / no ?
Any ideas on solutions?
Re: Monitor High Pitch Whistle
The likely culprit is either the LOPT on the circuit board, or the scan
assembly on the neck of the tube. Some people have had luck using superglue
dotted anywhere they can see a join where ferrite pieces are clamped
together. The glue then wicks into the joints and sets. YMMV
Apart from the normal unplugging from all power and other equipment, be VERY
careful to ensure there is no HV stored in capacitors or by the CRT. Not
usually lethal, but can cause galvanic responses in muscles that tears flesh
on sharp bits of the chassis, or even propels the monitor off the bench. An
imploding CRT is not something you want at your feet!
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