Monitor Power Supply

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

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
http://www.diychatroom.com/f17/c-tr...
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?

thanks,

Adam

Adam


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#1
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...

http://forums.guru3d.com/showthread...

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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#2
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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#3
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.

Adam


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