Hi Paul.

28-May-03 17:11:00, Paul Rogers wrote to Roy J. Tellason


 RJT>> Yeah,  but why flyback?  Your use of the word "buzz"
suggests a
 RJT>> lower pitch,  perhaps at the vertical rate or some harmonic of
 RJT>> it.  Is there something in there that's actually vibrating to
 RJT>> make it buzz?

 PR> It's high pitched.  Should I call it a squeal?  I've got a bit of
 PR> tinnitus, and it's similar--2kHz maybe?

The flyback runs at around 30kHz - most people can't hear tones that high.

so if you're hearing a squeal it's probably something else.

chech the extra-high-voltage wire for leaks. (maybe observe it in the
dark?) -- I expect you can plug such leaks with RTV silicone :)

OTOH maybe there's a pre-converting switched-mode powersuply unit in the
monitor that runs at around 2kHz (EG converting mains to 80V DC etc...).
there could be something loose in there or someththing losing.

 -=> Bye <=-

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