[TechAssist] Re: Noisey coils & Transformers
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 13 Dec 2001 22:16:47 -0800
I started this thread as a question how everyone handles this problem. There is
as many way as there are coils and transformers.
I use super glue and wire ties. Sometimes just glue, sometimes wire ties, and
sometimes both. Ultimately the cure should not compromise the safety of the
product, nor alter the inductance of the device. And above all cure the trouble.
I think the last cure I remember was lacquer. I used to use lacquer years ago
but I opted for the super glue because it's viscosity allowed better and faster
penetration into the coil foundation.
To answer your question, Yes, the glue fills the voids in the coil structure
that causes the acoustical vibration that is so annoying to our customers.
Dennis Viereck
Dave Krauts wrote:
> Is it the vibrating noise that you hear? That can be solved with glue.
>
> Dave
>
> ----- Original Message -----
> From: "David Downey" <davestv8584@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, December 13, 2001 3:12 PM
> Subject: [TechAssist] Re: Noisey coils & Transformers
>
> >
> >
> > Hey you guys have you all forgotten the old trick of a flexiable plastic
> > clear tubing We used this over thirty tears ago!!!Hardware stores carry
> > it.Or air tubing from a fish tank.Bring back any memories ???
> >
> >
> >
> > >From: tvdoctors@xxxxxxxxxxxxx >Reply-To: techassist@xxxxxxxxxxxxx >To:
> > techassist@xxxxxxxxxxxxx >Subject: [TechAssist] Re: Noisey coils
> > &Transformers >Date: 29 Nov 2001 10:40:10 -0800 >>Didn't your Dr. tell you
> > not to put anything bigger that your elbow in your ear, heh heh. Compelled
> > toreply to this, Neil >>>>** Original Subject: RE: [TechAssist] Re: Noisey
> > coils &Transformers >>** Original Sender: "Damon" >>** Original Date: Thu,
> > 29Nov 2001 08:02:56 -0500 (EST) >>>** Original Message follows... >>>>>I
> > reada posting that suggested using a hot glue gun. I got the opportunity
> > >>touse it on an IHVT recently and it works even better than silicone.
> > >>Silicone is just too flexy where the hot glue isn't. I'm switching to
> hot
> > >>glue from now on. >>>>As for isolating the culprit, I roll up a piece of
> > paper into a cone, stick >>it in my ear and find the loudest point. That
> > willat least isolate it to 1 >>or 2 coils. >>So that ringing in my ears is
> > Tinnitus eh? I always thought it was from >>drinking too much coffee.
> > >>>>Damon Brunger >>damon101@xxxxxxxxxxxxxx >>Telrad Electronic Services
> > >>FtWayne, IN 46815 >>----- Original Message -----From: "Jerry" >>To:
> > >>Sent:Wednesday, November 28, 2001 10:53 PM >>Subject: [TechAssist] Re:
> > Noisey coils &Transformers >>>>>>>>>>Good questions. These are always hard
> > tofind and fix. I don't think >>many >>>people hear the 15.7 kHz horz, but
> > rather hear the 1st sub harmonic (7867 >>>Hz). The most common component I
> > find causing these problems is those >>horz >>>lin chokes. They usually
> have
> > a gray colored plastic shrink covering on >>>them. Removing that and
> putting
> > a light coat of silicon sealant on it >>>usually cures that. I'm 42 and my
> > hearing rolls off at about 12 kHz and I >>>have tinitus (ringing in the
> > ears), the sub harmonic of horz is discordant >>>with the ringing I hear
> and
> > drives me nuts (I understand why the dog howls >>>when he hears the
> sirens)!
> > >>>>>>Jerry >>>Christian's Electronic Service >>>>>>----- Original Message
> > ----- >>>From: "Dennis Viereck" >>>To: >>>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
> > >>>| >>>| ================================= >>>| Help make your TechAssist
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> > >>>>>>** --------- End Original Message ----------- ** >>>>>TV Doctors 108
> > W.Main St. Monroe,Wa. 98272 360-794-6469
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