[TechAssist] Re: CTC167r High B+ 154-158v

  • From: "Warren C." <warrenca@xxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 17 Sep 2003 00:08:37 -0400

Ed

I tested the zenner diode and it tested ok. Can these test good but at the same
time be bad??
Also had time today to test SCR  ok too.
Any further hints guys?

Warren C

Teltek3 wrote:

> Warren;
> Try replacing CR4160...(176746) 5.6 volt zener Sub can be ECG/NTE 5011A.
>
> -Ed-
> Ed Gaidies
> Tel-Tek Electronics
> Ontario-Canada
> teltek3@xxxxxxxxxxxx
> ----- Original Message -----
> From: "Warren C." <warrenca@xxxxxxxxx>
> To: "techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, September 16, 2003 12:30 AM
> Subject: [TechAssist] CTC167r High B+ 154-158v
>
> > Hi All
> >
> > This CTC 167R came into my shop dead. Customer said that the set would
> > shut off all by itself
> > then they would have to wait to get the set on again. Then the set went
> > to off,  period.
> >
> > We found the fuse and the Hot bad. Fixed that but tv still turns off
> > after a few mins.
> > Tested the B+ standby found it to be about 153. V . When set turns off
> > now  you must unplug the set for a
> > few mins  to get it on again. Today I tested B+ and found almost 158V.
> > Way too high  I think.
> >
> > Does anyone have experience with this prob?
> >
> > We have tested many parts near SCR so far no bad ones.
> >
> > The (do not adjust B+) pot is supposed  to be 20K and ours reads 18.?K
> > Is that enough
> > to throw  it off??
> >
> > Any Ideas  All welcome.
> >
> > TIA
> >
> > Warren Campbell
> > Campbell's TV & Appliances
> > Cannington Ont
> >
> >
> >
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