[TechAssist] Re: tx81 rca with shorted hot transistor
- From: "Webster TV" <webstertv@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 8 Oct 2002 10:02:05 -0500
Wilf,
I had a TX825, which I believe is pretty close to the TX81, that had problem
with HOT running hot and also HV was a little low and also secondary
voltages were also a little low. Fix was to replace DP12. Don't know if
this will be of any help or not, but thought I'd mention it anyway.
Dan Webster
Webster's TV
Shullsburg, Wi.
----- Original Message -----
From: wblakey <wblakey@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 07, 2002 9:01 PM
Subject: [TechAssist] Re: tx81 rca with shorted hot transistor
>
> I repaired one of these tvs about one month ago and I did replace a 47mfd
> but I did not make any notes to tell me where it was located. I have
already
> repaired this one but the HOT is running a little too warm to suit me and
> this is why I am trying to figure out this cap in case it is causing the
> extra warmth. Thank you for the information about the bulletin as I will
> check out this info.
> Wilf Blakey/Blakey TV
> Kirkland Lake,Ontario,Canada
> ----- Original Message -----
> From: "John Mielke" <maintv2002@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, October 07, 2002 5:35 PM
> Subject: [TechAssist] Re: tx81 rca with shorted hot transistor
>
>
> >
> > According to the RCA bulletin on this chassis the main cap to replace is
> > CP08 (100uf-35v) There is also CP32 (4700pf-50v) recomended to change
> > along with TP06 (198748) although CP08 is the most important to change.
> > I do not know of a 47uf to change. By the way, 2SD1427 makes a good
> > replacement for the HOT (S2000A3 or RCA 198794) John.
> >
> > wblakey wrote:
> > > I remember reading about a gentleman with the tv as mentioned above
and
> he had a shorted hot transistor. It was suggested to change the transistor
> and two electrolytics , one was a 100mfd/35v and the other was a 47mfd
> (possibly 35v). I have a tv the same at present and have done this repair
> but cannot find out which cap is the 47 mfd and have spent too much time
in
> the archives with no success to find the repair mentioned. Does anyone
know
> which two caps are needed to change on this tv. TIA.
> > > Wilf Blakey/Blakey TV
> > > Kirkland Lake,Ontario,Canada
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> >
> > --
> > John Mielke
> > Main TV
> > Longmont,Co
> > 303 776 6955
> > maintv2002@xxxxxxxxxxxxx
> >
> >
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