[TechAssist] Re: Toshiba CF3054J, TAC8950 still vert lin troubles after C301 & C305 repl.]
- From: "peter kowalik" <pe.kow@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Sep 2002 23:38:40 -0400
Phil looking through the many responses to your question and the experiences
that I have had in a previous life as a Tosh ASC you always change C308,
220@50v , change the IC AN5521( for what it will cost, its worth changing
rather than having it fail 1 or 2 weeks down the road, it does happen) check
the B+ feed resistor (5.6-6.8 ohms) and diode near the flyback and if they
are on that particular board change C301 & C305 (red caps, use 105v caps).
At one time parts @ Tosh Canada supplied service with standard 2.2 mf caps
and there were quite a number of comebacks (some as soon as 2 weeks). For
what it's worth, hope it helps and the difference between changing all 3
caps, the res. the IC and either of the 2 diodes in the vert circuit is less
than $10. compared to a comeback, free repair( shop warranty) and possibly
bad mouthing. If at all possible---smile--be straight----and wear metallic
britches. Peter Kowalik-----pe.kow@xxxxxxxxxxxxxxxxxxxxx's Stereo Burlington
Ontario.
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Phil Bader
Sent: Monday, September 09, 2002 2:33 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Toshiba CF3054J, TAC8950 still vert lin troubles
after C301 & C305 repl.]
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
--
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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