[TechAssist] Re: RCA P52937YX2- Chassis PTK195M26B
- From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 14 Nov 2003 10:36:31 -0600
Pull the shields off of the convergence micro area, top and bottom.
If that takes care of it then look on the bottom shield are for were the
bottom cover may have been touching a trace or component.
I have also seen failures of the coils in the power supply to the
convergence micro, so they might be intermittant prior to failure.
Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl. 32506-3310
Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com
850-456-5995 voice
850-458-6369 fax
----- Original Message -----
From: "Valley TV" <valleytv@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 14, 2003 10:16 AM
Subject: [TechAssist] RCA P52937YX2- Chassis PTK195M26B
> Hi everyone-
>
> RCA P52937/ PTK 195
> I ran into something with this set late last night that I have not seen
before-
> When the set is "cold" picture has arc lines going across and appears to
jump in and out of convergence with bad pincushioning. Customer also said
the picture "used to" go off completely but the sound stayed on. After 1
minute everything is fine.....
>
> Well, last night when I turned the set on both pix AND sound went
completely off but quickly returned with a great picture. I immediately
looked at the coil feeding the base of the HO transistor, removed it,
cleaned the coil and connections and resoldered. Set did not lose
picture/audio but still had arc lines and slight loss of
convergence/pincushioning. In 1 minute it was perfect again. Disassembled
and looked VERY carefully for bad solder connection or fluid drips and found
none. Touched up solder connections, reassembled set and disconnected
convergence power supply to see if there was a problem there- Same
result..Arc lines and pulling.
> I had the HV transformer and HV divider with me and was going to replace 1
at a time but the customer wanted to go to bed so I was forced out and have
to return over the weekend.
>
> Has anyone else run into this??? Advice appreciated!
>
> Gary
> Valley TV
> Drums, Pa office
>
> --
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