[TechAssist] Re: RCA PTK 195 blows horizontal output
- From: "John @ Myers TV" <myers_tv@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 19 Feb 2004 21:36:38 -0500
Well, it could be the yoke, but I have the Sencore HA2500 Horizontal
Analyzer, and it says everything downstream is OK. I know that is hardly a
sure thing, but I'm going to hook it up to check the driver stage in the AM,
after trying Robert's suggestions.
I'm real tempted to run back to the shop tonight, but I'll think better on a
good night's sleep.
John,
Myers TV
Alliance, OH
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, February 19, 2004 7:19 PM
Subject: [TechAssist] Re: RCA PTK 195 blows horizontal output
> Possible yoke problem?
>
> 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@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
>
> ----- Original Message -----
> From: "Myers TV ." <myers_tv@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, February 19, 2004 7:06 PM
> Subject: [TechAssist] Re: RCA PTK 195 blows horizontal output
>
>
> > 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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