[TechAssist] Re: Noisey coils & Transformers


Sencore LC102........




----- 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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