[TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I think
- From: "Bill McFarland" <billmcfarland@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 22 Jan 2003 14:16:02 -0700
Jeff,
This same thing happened to me once...Just once..Before you spend hours and
hours in the convergence section (like I did) Check and make sure you did
not bump the centering rings on the CRTs while you were changing the
HVblock.. Especially the green one. If that moves it looks like the red and
blue are out of wack. Or, My helper actually bumped both the red and blue
rings once.
Just a little food for thought.
Good Luck!
Bill McFarland
DMC Electronics
Salt Lake City, Utah
(801) 233-0112
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Lyles Tv
Sent: Wednesday, January 22, 2003 11:48 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I
think
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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