[TechAssist] Re: RCA Model# P52960(YX1), chassis# PTK195Y06B, intermittent horizontal pincushion (FIXED)
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 17 Dec 2002 11:56:19 -0500
The problem turned out to be resistor R14808 is mounted in the air and was
slightly bent toward the heatsink of Q14802 just enough that it was
intermittently brushing against the heatsink and causing the problem. My
persistence finally paid off! Thanks for everyone's help.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
----- Original Message -----
From: "Mouton's Electronics" <moutons@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, December 13, 2002 10:55 AM
Subject: [TechAssist] Re: RCA Model# P52960(YX1), chassis# PTK195Y06B,
intermittent horizontal pincushion
>
> Hi Bob,
>
> Check the collector of Q14802 for 14-17vdc, if missing while no pincusion
> change: CR14403(227291) CR14800(243636) C14402 (239109) C14800(230982).
Any
> one of these can cause intermittant pincusion, on of the caps may even be
> swollen. This circuit is much like the ctc169 pin damper circuit. I have
> also found loose connections on these compontents when it is intermittant
so
> you will have to take it appart and look underneath. Most of the time it
has
> been a loose connection, tapping doesn't always show the problem due to
the
> riggidness of these components and some have glue on them.
>
> Hope this helps
>
> Jason Mouton
> Mouton's Electronics
> 1116 Center St.
> New Iberia, LA 70560
> 337-364-1641 Phone/Fax
> moutons@xxxxxxxxxxxxxxxx
>
>
> ----- Original Message -----
> From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
> To: "Techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, December 13, 2002 7:22 AM
> Subject: [TechAssist] RCA Model# P52960(YX1), chassis# PTK195Y06B,
> intermittent horizontal pincushion
>
>
> > Folks,
> >
> > I currently have an RCA Model# P52960(YX1), chassis# PTK195Y06B, with
very
> intermittent horizontal pincushion. I have gone to the customer's home
twice
> and never saw the problem so I ended up bringing it in to the shop. It ran
> around the clock for almost 24 hours before exhibiting this symptom. I
have
> resoldered a multitude of connections on various boards. The symptom does
> not appear to be vibration or tapping sensitive as it is now displaying
the
> pincushion problem and I cannot get it to go back to normal (bear in mind
I
> have not turned the TV off, hoping to keep the symptom present in order to
> troubleshoot. I am getting ready to leave for road calls so I have not yet
> broken out a scope nor do I cuurently have the time to sit with it. Also
> remember this chassis may be difficult to access locations on the board
with
> it fully assembled. I am almost afraid to turn it off for fear of the
> picture returning to normal. I was hoping someone out there had already
had
> this problem so
> > I welcome your input.
> >
> > Bob Waterman, CET® #RI-28
> > Master Technician License #9109
> > Service Manager
> > Gemini Computer, TV, & Security Alarms
> > (508)695-7302
> > (508)695-7769 FAX
> > geminitv@xxxxxxxxxxxxxxxx
> > geminitv@xxxxxxx
> >
> >
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>
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- » [TechAssist] Re: RCA Model# P52960(YX1), chassis# PTK195Y06B, intermittent horizontal pincushion (FIXED)
