[TechAssist] Re: RCA PTK 195 blows horizontal output
- From: Jim Shupe <jim@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 19 Feb 2004 18:03:01 -0800 (PST)
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
> > >
> >
> >
>
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