Monitor Power Supply

February 5, 2010 at 13:23:03
Specs: WinXP, 4GHZ/1GB

Just repaired a 19" Monitor I had lying spare. But now that its working there is a high pitched sound coming from the transformer. I've isolated it down to two inductors covered in rubber sleeve and open at the top.

Any ideas on how I can solve this as its really annoying. This post
seems to think that spraying laquer on it will solve the problem, as its related to high frequecny ribration inside. Anyone care to offer an opinion?




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February 5, 2010 at 15:52:14
I think this is caused by the insolation breaking down around the coils causing cross talk in the magnetic fields (a.k.a. feedback)

You could try this...

or replace the coils. Or better yet, throw them old stinking tube monitors away and get a brand new LCD. Also, you could sell the monitors to an old man because any one above the age of 25 can't hear those high frequencies any more.

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February 5, 2010 at 16:06:01
I guess it is kind of late to warn you of the dangers but CRT monitors can kill you when mucking around inside of them. Capacitors hold a charge for a long time.

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February 5, 2010 at 16:14:47
No its a 19" TFT

And I'm 30, I can hear those mosquito alarms too, god they're annoying.


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