[TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac applied..update
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 22 Sep 2004 09:18:33 -0500
Do you have any secondary voltages from power supply , +140 ?
These switch mode tarnsformers are known for squeeling/singing but will
perform OK
If power supply not running check your start up supply resistors and gate
circuit to Q14101
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: "Shaun" <satguy@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, September 21, 2004 5:30 PM
Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
applied..update
> Yes I can but the unit still squeals with the horz circuit out of the
> circuit. If I disconnect the convergence ac cord the squealing turns into
a
> constant chirp, chirp. The squeal is coming from the power transformer.
>
> Shaun
>
> Advanced Electronics
> 224 West Riverview Ave.
> Fort Morgan, CO 80701
> ----- Original Message -----
> From: "al m" <ampm@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, September 21, 2004 4:10 PM
> Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
> applied..update
>
>
> > Sounds like you still have a short in the HOT circuit somewhere. Can you
> > check the timing and the load?
> > Al Marquardt
> > ampm@xxxxxxx
> > Al Marquardt Electronic Repair
> > 206 W Main
> > Girardville Pa. 17935
> > ----- Original Message -----
> > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Tuesday, September 21, 2004 5:42 PM
> > Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
> > applied..update
> >
> >
> > > Ok replaced the flyback (239111) and still have the squealing when ac
is
> > > applied. This time it shorted the horz output. The old fly did ring
bad.
> I
> > > can not find any bad parts in the power supply. It will still squeal
> with
> > > the horz output removed. Any one have any help?
> > >
> > > Shaun
> > >
> > > Advanced Electronics
> > > 224 West Riverview Ave.
> > > Fort Morgan, CO 80701
> > > ----- Original Message -----
> > > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, September 17, 2004 4:37 AM
> > > Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
> > > applied
> > >
> > >
> > >> I am showing the following:
> > >>
> > >> Part# 239111
> > >> Ref# T14401
> > >> TRANSFORMER IHVT TDS29
> > >> Drawing# XX15128-12D
> > >>
> > >> 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@xxxxxxxxxxx
> > >> geminitv@xxxxxxx
> > >> www.geminicomputertvsecurityalarms.com
> > >>
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > >> To: <techassist@xxxxxxxxxxxxx>
> > >> Sent: Thursday, September 16, 2004 8:36 PM
> > >> Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
> > > applied
> > >>
> > >>
> > >> > Do you know the part number for the flyback? I seem to remember
there
> > > were
> > >> > some problems with this chassis and the flyback replacement.
> > >> >
> > >> > Shaun
> > >> >
> > >> > Advanced Electronics
> > >> > 224 West Riverview Ave.
> > >> > Fort Morgan, CO 80701
> > >> > ----- Original Message -----
> > >> > From: "al m" <ampm@xxxxxxx>
> > >> > To: <techassist@xxxxxxxxxxxxx>
> > >> > Sent: Thursday, September 16, 2004 4:49 PM
> > >> > Subject: [TechAssist] Re: RCA CTC195K Model 60920BL Squeels when ac
> > >> applied
> > >> >
> > >> >
> > >> > > Replace the flyback.
> > >> > > Al Marquardt
> > >> > > ampm@xxxxxxx
> > >> > > Al Marquardt Electronic Repair
> > >> > > 206 W Main
> > >> > > Girardville Pa. 17935
> > >> > > ----- Original Message -----
> > >> > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > >> > > To: "tech" <techassist@xxxxxxxxxxxxx>
> > >> > > Sent: Thursday, September 16, 2004 5:15 PM
> > >> > > Subject: [TechAssist] RCA CTC195K Model 60920BL Squeels when ac
> > > applied
> > >> > >
> > >> > >
> > >> > > > This set squeals when AC is applied. It will try to turn on if
> > >> > > > power
> > >> > > > button
> > >> > > > is pushed but will do the three time try then go back to the
> > >> > > > squeal.
> > >> > Horz
> > >> > > > output is good all caps in power supply are good checked all
> diodes
> > > in
> > >> > > > power
> > >> > > > supply. I removed collector on horz out and still squeals with
it
> > > out
> > >> of
> > >> > > > the
> > >> > > > circuit. Need a few other tips if anyone has any. There where
no
> > >> > squealing
> > >> > > > tips on the web site.
> > >> > > >
> > >> > > > Shaun
> > >> > > >
> > >> > > > Advanced Electronics
> > >> > > > 224 West Riverview Ave.
> > >> > > > Fort Morgan, CO 80701
> > >> > > >
> > >> > > >
> > >> > >
> > >> >
> > >>
> >
>
>> -------------------------------------------------------------------------
> -
> > >> > ---
> > >> > > > Lost Password:
> > >> > > > http://www.tech-assist.org and select "Login Problems?".
> > >> > > > Email Archives:
> > >> > > > //www.freelists.org/archives/techassist/
> > >> > > >
> > >> > > >
> > >> > >
> > >> > >
> > >> > >
> > >> >
> > >>
> >
>
>> -------------------------------------------------------------------------
> -
> > >> > ---
> > >> > > Lost Password:
> > >> > > http://www.tech-assist.org and select "Login Problems?".
> > >> > > Email Archives:
> > >> > > //www.freelists.org/archives/techassist/
> > >> >
> > >> >
> > >>
> >
>
>> -------------------------------------------------------------------------
> -
> > >> ---
> > >> > Lost Password:
> > >> > http://www.tech-assist.org and select "Login Problems?".
> > >> > Email Archives:
> > >> > //www.freelists.org/archives/techassist/
> > >>
> > >>
> > >>
> >
>
>> -------------------------------------------------------------------------
> -
> > > ---
> > >> Lost Password:
> > >> http://www.tech-assist.org and select "Login Problems?".
> > >> Email Archives:
> > >> //www.freelists.org/archives/techassist/
> > >
> > >
> >
>
> --------------------------------------------------------------------------
> ---
> > > Lost Password:
> > > http://www.tech-assist.org and select "Login Problems?".
> > > Email Archives:
> > > //www.freelists.org/archives/techassist/
> > >
> >
> >
> >
>
> --------------------------------------------------------------------------
> ---
> > Lost Password:
> > http://www.tech-assist.org and select "Login Problems?".
> > Email Archives:
> > //www.freelists.org/archives/techassist/
>
>
> --------------------------------------------------------------------------
---
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
