[TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I think

  • From: "Lyles Tv" <tech@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 23 Jan 2003 09:20:44 -0600

The centering rings?  I asked myself.  There is no way I could have knocked
them that far out, IF I even touched them.  Well at this point I don't care.
I was able to bring the green into the red and blue with the rings.  I don't
see how I could have possibly moved the rings approx 180 degrees  but at
this point I am thrilled with just having to converge it now.---jeesh--as I
typed that I realized that I had subbed out the convergence board to
diagnose---put original back in--voila--no convergence needed
I am groveling at your feet with appreciation these last couple of days
guys.  My mind has been mush because of other extenuating circumstances.  It
feels like I am fighting my way out of the fog---mentally
Thanks
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: "Bill McFarland" <billmcfarland@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, January 22, 2003 3:16 PM
Subject: [TechAssist] Re: RCA PTK169PGB P52738WK injected problem--I think


>
> 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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