[TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I think
- From: "Lyles Tv" <tech@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 22 Jan 2003 12:48:24 -0600
Most likely the problem I am having now is something that was gonna happen
anyway, and had impecible timing. It failed at the right moment to really
piss me off-----Or by having the crt module off, it caused another
problem--not sure yet, and me and the set are not on friendly enough terms
for me to look at it yet. I got friendlier fish to fry.
Jeff
Lyles TV and Appliance
17 S Washington St
Elkhorn, Wi. 53121
ph 262-723-3477
fax 262-723-3658
tech@xxxxxxxxxxx
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, January 22, 2003 12:13 PM
Subject: [TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I think
>
> Jeff, I'm not familiar with this situation. Are you saying that having
> the CRT modules disconnected when running the set will cause the
> convergance chips to blow? How about on a CTC178 chassis, will the same
> thing happen? The CTC178 I've been working on has been fired up without
> the CRT boards on. The vertical ouput IC smoked but I haven't found out
> why yet. I hope I don't have any convergance damage besides. (I only
> work on this set when caught up with other work).
>
> Thanks.
>
>
>
> Gary McCartney
>
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: gary (at) number63.ca
>
>
>
>
>
>
>
>
>
>
> Lyles Tv wrote:
> >
> > Jeesh--I can blame this one on the telephone--kinda. Set came in
dead--chirps. I replaced all the normal (for me) parts in the PS and HOT
circuit. Set fired up fine and played for2 days while I waited for the HV
splitter to arrive, as I allways replace these on virgin sets to eliminate
repeats. While replacing it, I pulled off the red crt module to give me
more room to work with---big mistake---between the time I started to replace
the splitter, and finished reinstalling it, I had 3 phone calls. Of course
this eliminated my "Don't forget the crt module" post it note I put in my
mind----gone. I fired it up with the module off and the first thing I
notice is that is out of convrgence (horizontal) and in the next instant
realize that there is no red. I immediatly assume I had crushed the red
anode lead in the splitter (even though this is an original replacement and
normally this don't happen with those) I pull the red anode to see no
problem, and only then notice th
> e
> > red crt module laying there. Reassemble all and still have no
horizontal convergence. red and blue move, but are to far out to be pulled
in. I have 11VDC going into pins of the 3 amp IC's on the convergence
board (U8201, 202, 203) but nothing coming out. Before I pull the
schematics--I am fishing for a common problem first.
> > TIA
> > Jeff
> > Lyles TV and Appliance
> > 17 S Washington St
> > Elkhorn, Wi. 53121
> > ph 262-723-3477
> > fax 262-723-3658
> > tech@xxxxxxxxxxx
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