[TechAssist] Noisey coils & Transformers

  • From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 28 Nov 2001 19:38:54 -0800

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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