[TechAssist] Re: Subject: Noisey coils & Transformers
- From: Dude1127@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 30 Nov 2001 09:00:50 EST
Dennis
If you can't hear it hook up a small mike to your scope to find it.,Les
----- Original Message -----
From: "Dennis Viereck" <wa6ati@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, November 28, 2001 10:38 PM
Subject: [TechAssist] Noisey coils & Transformers
Since we ran the "cleaning the video head" into the ground I have
another question for the group. I would like to know how all of you check
for coils, transformers, and other components that sometime have the
tendency to squeal at high audible frequencies in televisions? The devices
I mean are like flybacks, linearity coils, yokes and brackets for these
devices. Once you find, how do you correct them? By replacement or other
tricks? For those of you, like me, who's hearing rolls off at 7 khz and
can't > hear these noises, how do you detect them, and how do you know you
have it repaired if you can't hear these high frequencies?
Dennis Viereck
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