[TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in

  • From: "tony saracco" <tcselectronics@xxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 7 May 2004 10:07:50 -0500

The flyback is bad..More than likely there is a pin hole at the top of
transformer where the HV lead meets the casing ( that where I usually see
it), flyback is about $29 from tritronics.I don't believe the  ctc177
transformer will sub.

Tony Saracco
TCS ELECTRONICS
406 Andra Ct.
Gilberts, IL 60136
tcselectronics@xxxxxxxxx

----- Original Message ----- 
From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 06, 2004 6:01 PM
Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in


> TV is on the bench now, so I found a shorted HOT, swapped it with a
> 2SD1880 for test purpose only, set the variable to 90VAC and hit the ON
> button.
>
> Heard two snaps before the squeal came back, HOT was shorted again. I
> didn't even get a chance to see if the flyback was arcing externally,
> but it arcing it was, you can't mistake those snapping sound. I will
> ring the flyback tomorrow with my poor man's flyback ringer (my scope
> and a capacitor) and confirm what most you already know.
>
> How much does a new flyback cost? Can you use one from a CTC177 chassis?
>
> David Lessard
> Alexandria Electronics
> mr_fixit@xxxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of jonas miglinas
> Sent: Friday, May 07, 2004 12:32 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: RCA F31672ET - CTC187CJ - Squeals on plug-in
>
> HOT shorted, more than likely the flyback is also shorted.
>
> Jonas Miglinas
> Miglinas TV
> Chicago
> ----- Original Message ----- 
> From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, May 06, 2004 1:08 PM
> Subject: [TechAssist] RCA F31672ET - CTC187CJ - Squeals on plug-in
>
>
> > This TV squeals upon plug-in. I know there's a short somewhere causing
> > the chopper PS to squeal, question is where? Does anyone know what the
> > common causes for this problem are? I don't have the TV on the bench
> yet
> > and I'm asking this question in advance.
> >
> >
> > Thanks in advance.
> >
> >
> >
> > David Lessard
> >
> > Alexandria Electronics
> >
> > 50 Harrison Street
> >
> > P.O. Box 1366
> >
> > Alexandria, Ontario.
> >
> > Canada
> >
> > K0C-1A0
> >
> > mr_fixit@xxxxxxxxxxxx
> >
> >
> >
> >
> >
> >
> >
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