[TechAssist] Re: Dead rca CTC169CA2 model# g27220tn

  • From: "Junior E Hurdle" <jselectronics@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 26 Feb 2002 00:32:45 -0200


It definitely was the Y4301 resonator.
thanks.
----- Original Message -----
From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, February 21, 2002 12:30 PM
Subject: [TechAssist] Re: Dead rca CTC169CA2 model# g27220tn


>
> If not the IC Try a new Y4301 resonator  # 200210  I have had these go
bad.
> Phillip R Hull
> phil245@xxxxxxxxxxxxx
> ----- Original Message -----
> From: "Junior E Hurdle" <jselectronics@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, February 20, 2002 10:55 PM
> Subject: [TechAssist] Re: Dead rca CTC169CA2 model# g27220tn
>
>
> >
> > so far I have been able to get the B+ to 143-145v by changing the gaps
and
> > regulator , and when I try to switch the set on I get an 8.8v reading
for
> > the hz vcc but it only stays a few seconds.So my problem may be the
TA8680
> > ic.  I am using a Nte2324 as the hz output.
> >
> > ----- Original Message -----
> > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, February 07, 2002 1:18 AM
> > Subject: [TechAssist] Re: Dead rca CTC169CA2 model# g27220tn
> >
> >
> > >
> > > There are several things to check:
> > > 1] check C4402 plastic cap located in front of the horiz out (smaller
> one)
> > > these open up and kill the horiz output.
> > >
> > > 2} In standby check that your B+ is at 143 - 145 max, if not, adjust
> using
> > > the B+ adjust pot by the SMPS Ic, if you can't get it down that far,
> there
> > > is a 2.2uf/100wv cap located right next ot the SMPS Ic that dries out
> and
> > > causes the standby voltage to shoot up to 200V!!
> > >
> > > 3] Lastly check cr4118 located beside the SMPS transformer, must have
13
> > to
> > > 15 volts on it, if not replace it .
> > >
> > > I have not seen any other problems causing a NO START condition other
> than
> > > the above mentioned components. Start here.
> > > Damon Brunger
> > > damon101@xxxxxxxxxxxxxx
> > > Telrad Electronic Services
> > > Ft Wayne, IN 46815
> > > ----- Original Message -----
> > > From: "Junior E Hurdle" <jselectronics@xxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, February 06, 2002 8:08 AM
> > > Subject: [TechAssist] Re: Dead rca CTC169CA2 model# g27220tn
> > >
> > >
> > > >
> > > >   ----- Original Message -----
> > > >   From: Junior E Hurdle
> > > >   To: techassist@xxxxxxxxxxxxx
> > > >   Sent: Monday, February 04, 2002 3:28 AM
> > > >   Subject: Dead rca CTC169CA2 model# g27220tn
> > > >
> > > >
> > > >   Hi techs
> > > >   I am working on this Rca tv which had a shorted hz output. I have
> > > replaced the hz op but the set is still dead.
> > > >    Q4301 (the on/off switch)  is giving me a reading of  0.2v when i
> > press
> > > the power switch.
> > > >   also at the reg transistor  (Q4101) I am reading 157V at collector
> and
> > > 0V at base and emitter.
> > > >   also should'nt there be a horizontal vcc present on ic U1001 or
evan
> > the
> > > usual 9v that supplies this ic ?
> > > >   Please Help
> > > >   Thankyou
> > > >   Junior.
> > > >
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