[TechAssist] Re: Sony KV-32S20 [repeat failure]

  • From: "Shoreline Electronics" <jstielau@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 18 Aug 2004 23:11:10 -0400

If your HOT didn't short again.your A board should be OK.

Try scoping the 2sc4834's as mentioned in earlier posts.....maybe you'll see
a discrepancy.

ANYTHING in that primary/secondary circuit can wipe those out if not 100%

Can be frustrating and make the customer be wary.

==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd


----- Original Message ----- 
From: "Dan Garris" <dgarris@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, August 18, 2004 10:58 PM
Subject: [TechAssist] Re: Sony KV-32S20 [repeat failure]


> What is the Sony p/n for the "G" board for this model? (I'd be interesting
> to see what Tritronics cost on the part is)
>
> Also, When set comes back in, I will install the 2SC4834"P"s so they willl
> run cooler and also the VDR in P/S and all the electrolytics near the
Horiz
> drive transformer. Since I am at home and not at the shop, I only recall
(1)
> VDR in the P/S. Are there (2) VDR's in this model? I do recall in other
> models as many as (3) but only recall (1) in this model. I'll research
more
> when I get to the shop.
>
> Garris Radio & TV
> Danny Garris
> New Bern, NC
> dgarris@xxxxxxxxxxx
> Ph: (252) 638-4477
>
>
> >From: "Shoreline Electronics" <jstielau@xxxxxxxx>
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: <techassist@xxxxxxxxxxxxx>
> >Subject: [TechAssist] Re: Sony KV-32S20 [repeat failure]
> >Date: Wed, 18 Aug 2004 22:44:14 -0400
> >
> >See if Tritronics list the G baord......for $40 bucks it will save your
> >sanity!
> >
> >==========================
> >Jeff Stielau
> >Shoreline Electronics Repair
> >344 East Main Street
> >Clinton,CT 06413
> >860-399-1861
> >860-664-3535 (fax)
> >jstielau@xxxxxxxx
> >========================
> >"If you push something hard enough it will fall over."
> >Fudd's First Law of Opposition - Sir Sidney Fudd
> >
> >
> >----- Original Message -----
> >From: "Dan Garris" <dgarris@xxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Wednesday, August 18, 2004 6:05 PM
> >Subject: [TechAssist] Re: Sony KV-32S20 [repeat failure]
> >
> >
> > > I did resolder the Horiz driver transformer, but I did not replace the
> >VDR
> > > nor the Caps in the power supply. That was exactly my next move but I
> >wanted
> > > to get some outside suggestions so when the set comes back in next
week
> >I'll
> > > know exactly what other components to replace to prevent a repeat
> >failure.
> > >
> > > Garris Radio & TV
> > > Danny Garris
> > > New Bern, NC
> > > dgarris@xxxxxxxxxxx
> > > Ph: (252) 638-4477
> > >
> > >
> > > >From: peggs <peggs@xxxxxxxxxxxxx>
> > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > >To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
> > > >Subject: [TechAssist] Re: Sony KV-32S20  [repeat failure]
> > > >Date: Wed, 18 Aug 2004 15:53:41 -0700
> > > >
> > > >resolder H drive tranformer
> > > >replace VDR's in Ps
> > > >replace electrolytic near H drive transformer(.47uF)
> > > >
> > > >Peggs
> > > >
> > > >At 01:23 PM 8/18/04, Danny Garris wrote:
> > > > >I repaired a dead Sony 32" KV-32S20 TV w/ Shorted Q601, Q602
> >(2SC4834)
> > > >and
> > > > >Open R607 .1ohm 1/2 W and Shorted HOT 2SC5148 (8-729-035-75).
> > > > >
> > > > >Set played fine after repair for 2 days in shop. Customer picked-up
> >set
> > > >and
> > > > >a couple days later called to say set was dead again! I found Q601,
> >Q602
> > > > >shorted and R607 Open this time. (The HOT was ok) Again Set played
> >fine
> > > >for
> > > > >two days in-shop after second repair.
> > > > >
> > > > >Customer called again a few days later and said set is dead again.
> >What
> > > >am I
> > > > >missing?
> > > > >
> > > > >Garris Radio & TV
> > > > >Danny Garris
> > > > >New Bern, NC
> > > > >dgarris@xxxxxxxxxxx
> > > > >Ph: (252) 638-4477
> > > > >
> > > > >
> > > > >
> > > >
> >
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