[TechAssist] Re: RCA PTK 195 blows horizontal output
- From: "John @ Myers TV" <myers_tv@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 20 Feb 2004 07:27:37 -0500
Well, here's an update. No leakage frop the CRT's. Checked R14305, and
driver connections.
According to my analyzer, we have a driver problem. Now the fun begins.
Thanks for everyones help so far.
John Myers
Myers TV Service Since 1984
Alliance, OH
For Professional Technicians ONLY
ph 330-821-6545
----- Original Message -----
From: "John @ Myers TV" <myers_tv@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, February 19, 2004 9:39 PM
Subject: [TechAssist] Re: RCA PTK 195 blows horizontal output
> Only in run mode. In standby, it runs higher.
>
> John
> MTV
> ----- Original Message -----
> From: "Jim Shupe" <jim@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, February 19, 2004 9:03 PM
> Subject: [TechAssist] Re: RCA PTK 195 blows horizontal output
>
>
> > Hi...
> > Shouldn't that B+ be about 141V or so?
> > Jim Shupe, CET
> > Yucca Valley, Ca
> > jim@xxxxxxxxxxxxx
> >
> >
> > --- "Myers TV ." <myers_tv@xxxxxxxxxxxxx> wrote:
> > > Hi guys,
> > >
> > > I disconnected the anode lead from the splitter for
> > > the last test. So, I don't think we have a shorted
> > > anode on any of the tubes, but I'll check in the AM
> > > for leakage, and maybe disconnect the CRT boards
> > > before starting it up.
> > >
> > > Also, those are the numbers I used, Phil. Thanks.
> > >
> > > Thanks,
> > >
> > > John
> > > Myers TV
> > > Alliance, OH
> > > al m <ampm@xxxxxxx> wrote:
> > > I agree check the tube. I had a CTC197 that ate two
> > > HOT's before I saw a
> > > flash in the tube.
> > > Al Marquardt
> > > ampm@xxxxxxx
> > > Al Marquardt Electronic Repair
> > > 206 W Main
> > > Girardville Pa. 17935
> > > ----- Original Message -----
> > > From: "Phillip R. Hull"
> > >
> > > To:
> > > Sent: Thursday, February 19, 2004 4:07 PM
> > > Subject: [TechAssist] Re: RCA PTK 195 blows
> > > horizontal output
> > >
> > >
> > > > I hope you used 250694 IHVT 237470 H out. If so
> > > you may have a H
> > > > drive problem check driver circuit. also a shorted
> > > CRT can do this also
> > > > check for fluid leaking from CRT's
> > > > Phillip R Hull STET
> > > > phil245@xxxxxxxxxxxxx
> > > > FAX 517--569-3075
> > > > Professional Technicians only
> > > > ----- Original Message -----
> > > > From: "John @ Myers TV"
> > > > To:
> > > > Sent: Thursday, February 19, 2004 3:12 PM
> > > > Subject: [TechAssist] RCA PTK 195 blows horizontal
> > > output
> > > >
> > > >
> > > > > Hello,
> > > > > Here's my latest dog. An RCA chassis (M#P52927 /
> > > ch# PTK195M26B)
> > > > >
> > > > > It blows the Horizontal output transistor after
> > > about 2 seconds.
> > > > >
> > > > > I've ruled out the splitter; Changed the
> > > flyback, and the horizontal
> > > > output transistor (used original RCA parts on
> > > both). Double checked that I
> > > > had the right transformer for the chassis.
> > > > >
> > > > > With the transistor out, I measured 169V at the
> > > collector terminal, in
> > > > standby mode. The horizontal output circuit tests
> > > OK on my horizontal
> > > > analyzer.
> > > > >
> > > > > Any ideas?
> > > > >
> > > > > John Myers
> > > > > Myers TV Service Since 1984
> > > > > Alliance, OH
> > > > > For Professional Technicians ONLY
> > > > > ph 330-821-6545
> > > > >
> > > >
> > > >
> > >
>
> --------------------------------------------------------------------------
> > > > ---
> > > > > 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:
