[TechAssist] Re: CTC169 vertical
- From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 23 Dec 2003 14:12:55 +0000
I actually pulled it and stuck it on my BK 830 it read 1.505 uf, I guess I
can swap it out and see if it is failing interally, the set gets touchy
generalized can tap in the region of the cap, the flyback, SCR ... will
cause problems after the set has run for ~ 10 min will be worse than cold.
And I tried reflowing the vertical circuit as on page 2-4 of the RCA
schematic.
Peter Oliver
Tucson Radio TV
From: "al m" <ampm@xxxxxxx>
Reply-To: techassist@xxxxxxxxxxxxx
To: <techassist@xxxxxxxxxxxxx>
Subject: [TechAssist] Re: CTC169 vertical
Date: Tue, 23 Dec 2003 00:51:09 -0500
Check C4511 It is a box cap toward the front of the board. I've had bad
solder on this and internal breaks on it. Try tapping on it.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, December 23, 2003 12:15 AM
Subject: [TechAssist] CTC169 vertical
>
>
> Have several CTC169 sets with intermittant vertical problems,
> (intermittant fluttering/colapse) Have checked the capactiors and
> connections following schematic no effect get worse when warm- tap
sensitive
> in generalized way. Can desensitize (at least as a temporay test measure)
by
> placing shims under board to deflect board upward. since hese sets use a
> moldulated flyback drive to run the vertilcal. I have seen several tips
on
> vertical problems to replace the flyback. Any one have any historys on
how
> often it is necessary to replace the flyback in ctc 169's to cure a
vertical
> problem...
>
> Peter Oliver
> Tucson Radio TV
>
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