[TechAssist] Re: CTC197CD RCA
- From: "Tel-Tek Electronics" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 13 Feb 2004 21:03:28 -0500
Screen voltage may not be accurate reading with a meter, but when I
connect the lead for screen to CRT board, drops down to about 1.5 volts,
disconnected it's about 150 volts. This is with CRT board on or off CRT.
-Ed-
Jim Myers suspects short in CRT socket, which makes sense. These spark
gaps must have a common ground I can disconnect.
Ed Gaidies
Tel-Tek Electronics
Ontario-Canada
Servicing the Consumer Electronic Industry since 1963
teltek3@xxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Phil Bader
Sent: Friday, February 13, 2004 5:00 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: CTC197CD RCA
Ed, the screen voltage is hard to read, as most all of our meters would
load it
down. very hi-impedence circuit.
CRT short??
Didn't someone mention a way to "blast clear "some types of CRT shorts
by a
jumper lead from a voltage source within the set over to the CRT base
pins (CRT
board removed!).
Phil Bader
Ed Gaidies wrote:
> Bob;
> I have about 150 volts on the screen Out..but as soon a I connect the
> screen lead to the CRT socket, drops to zero.
> This is even with the CRT board pulled from the tube.
>
> Do you remember what was shorted on the CRT socket.
>
> That screen voltage coming out of the Flyback seems low at 150, but I
> suspect something shorted on the CRT Board.
>
> -Ed-
>
> Ed Gaidies
> Tel-Tek Electronics.
> Ontario-Canada
>
> teltek3@xxxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bob@Bobs tv
> Sent: February 13, 2004 2:13 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: CTC197CD RCA
>
> Ed,
> Don't have print, but did you check CRT and CRT socket for shorts?
> Had a
> set, the socket was shorted and took out the controls section on
fly...
> Bob,
>
> Bobs TV Worcester, ma
>
> woodman1@xxxxxxxx
>
> Main 508-853-1482
> Fax 508-853-1480
> ----- Original Message -----
> From: "Ed Gaidies" <teltek3@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, February 13, 2004 1:21 PM
> Subject: [TechAssist] CTC197CD RCA
>
> > Would someone have a Manual on this set. Particularly the Sweep
> ciruit.
> > This set was originally Dead.
> > Replaced Flyback 237506, Got HV and sound back. But seems I have no
> > Screen Voltage. (Zero). So of course I have no raster. I have tried
a
> > second flyback, thinking a faulty transformer, but same result.
> >
> > A Circuit and any suggestions appreciated.
> >
> > Thanks;
> >
> > -Ed-
> >
> > Ed Gaidies
> > Tel-Tek Electronics.
> > Ontario-Canada
> >
> > teltek3@xxxxxxxxxxxx
> >
> >
> >
> >
>
------------------------------------------------------------------------
> --
> ---
> > 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/
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
------------------------------------------------------------------------
-----
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:
