[TechAssist] Re: Question Thomson technical help.
- From: Paul <dntwntv@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 31 Dec 2003 13:34:52 -0800 (PST)
It is outboarded on the bottom of the main board. There is no reference number
that I can see. I think Jim Meyers was right. Check the reply I just posted.
Paul
Gemini Computer & TV <geminitv@xxxxxxxxxxxxxxxx> wrote:Can you please give us
the reference number of that resistor in the circuit?
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "Paul"
To:
Sent: Wednesday, December 31, 2003 2:40 PM
Subject: [TechAssist] Re: Question Thomson technical help.
> Hi Bob Your absolutely right it does not make sense to to have a .84 1w
or 2w (can't tell from the size), going to the collector of that transistor.
It is not shown in the Sams 4052. The Sams shows it like you described. That
is why I think that there is more than one configuration for this circuit.
As mentioned before if I disconnect that resistor I get 36v at the supply
and on the collector but I loose the sound. It was mentioned in one of the
other post that this is probably an alteration made by someone else. I would
agree except the solder connections appear to be wave soldered. Indicating
that this was more than likely done at the factory. Also the mute function
works fine. I talked to another tech friend from another shop and he said he
pretty much just ignored that problem. I can not believe it came from the
factory with this problem. I like to make everything work like it is
supposed to if I can. Paul
> Gemini Computer & TV wrote:I have searched all
my resources and can't find anything except for Q11900
> itself but I see that has already been replaced. The only resistors I see
> off the collector of Q11900 are R11904 (1K that goes to pin 5 of the audio
> amp IC and R11926 (15K that goes to +31VS source in parallel with C11907
> (1uf). What is the reference number of this .84 ohm resistor you mention
> because it doesn't make sense to have that value resistor off the
collector
> of Q11900?
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
>
> ----- Original Message -----
> From: "Paul"
> To:
> Sent: Tuesday, December 30, 2003 9:12 PM
> Subject: [TechAssist] Re: Question Thomson technical help.
>
>
> > I have posted the problem and haven't come up with a fix. It is an RCA
> ctc197A. There are apparently variations in this circuit because the
> collector of the mute transistor Q11900 has a .84 ohm resistor to ground
and
> 0 volts. If I lift that resistor I lose the sound. Other circuits show 31v
> on the collector. The problem is a delayed loud pop in the sound when
> plugged in and also when turned off. I have replaced the mute transistor
and
> a couple of caps in the supply for the sound. Several have tried to help
and
> I am not unappreciative, but maybe no one else has had this problem.
> Paul
> > "Phillip R. Hull"
> wrote:You may be able to get
> more help here. Whats the problem??
> >
> > Phillip R Hull STET
> > phil245@xxxxxxxxxxxxx
> > FAX 517--569-3075
> > Professional Technicians only
> > ----- Original Message -----
> > From: "Paul"
> > To:
> > Sent: Tuesday, December 30, 2003 4:57 PM
> > Subject: [TechAssist] Question Thomson technical help.
> >
> >
> > > Have any of you used Thomson technical assistance recently? If so how
> > would you rate it? Both AFS and non AFS. I have not called them in a
> number
> > of years,but the last time as I recall it was rather expensive and they
> > didn't help with my problem. Paul
> > >
> > > Paul ,B
> > Central TV&Video
> > Grover Beach Ca.
> > >
> > >
> >
>
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> > Paul ,B
> Central TV&Video
> Grover Beach Ca.
> >
> >
>
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> Paul ,B
Central TV&Video
Grover Beach Ca.
>
>
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Central TV&Video
Grover Beach Ca.
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