[TechAssist] Re: RCA PTK 195 blows horizontal output
- From: "Myers TV ." <myers_tv@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 19 Feb 2004 16:06:45 -0800 (PST)
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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