[TechAssist] Re: Toshiba CF3054J, TAC8950 still vert lin troublesafter C301 & C305 repl.]
- From: Phil Bader <philbad@xxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 09 Sep 2002 16:36:40 -0400
I repl. C301,305,308,and a few others for measure while troubleshooting.
The picture is linear and adjusts full. The Vert. output ICheat sink is
very warm ( I can hold my finger on it for several seconds before
uncomfortable), but I believe these do run as such. I can replace this
AN5521 vert output IC for safety sake, but seems OK.
Thoughts?
Phil Bader
Ed Gaidies wrote:
>
> Phil......
> Always....always.......C308......220ufd/35volts.
> Due to the fact that these 2.2ufd/35 volts are timing capacitors.....should
> never use higher than 50 volts.....discharge time is too great with a
> 250volt cap. I have never tried to go higher for that reason,,,although you
> may be lucky.
> BTW...you may have to change the vertical O/P IC too.
>
> -Ed-
> Tel-Tek Electronics
> Midland, Ontario
> Canada.
>
> teltek2@xxxxxxxxxxxx
> teltek3@xxxxxxxxxxxx
> teltek@xxxxxxx
>
> "Quality will be remembered....long after Price is forgotten"
>
> Phil Bader The above is the reply to your message dated 9/9/02 2:33 PM
>
> >
> >
> >
> > 31" Toshiba TV CF3054J: Orig. symptom was very narrow vert. deflection
> > and fold over.
> > ESR'd C301 and C305, both 2.2/50V red electrolytics.Both very high,
> > almost infinate ESR. Replaced both with 2.2/250v @105 deg. (all I had).
> > Increased vert. heigth but still narrow by 4 inches top and bottom with
> > a top fold over. These two caps always do it. I measured the caps before
> > install and are exactly 2.2 mfd. What else am I overlooking here?
> > Phil Bader
>
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: philbad@xxxxxxxxxx
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