[TechAssist] Re: Sony TV, KV27TS27, Regulation trouble

  • From: <damon101@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 5 Oct 2001 08:41:51 -0500

Hi Ken,

A couple of notes here : R647 is the white fusing resistor, right? The value
is 1.2 ohms not 2.2 ohms. q601 and 601 are 2SC4834 not 2SC4664.


----- Original Message -----
From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 04, 2001 3:05 PM
Subject: [TechAssist] Re: Sony TV, KV27TS27, Regulation trouble


>
> Also found references to the following parts in tips for KV27TS29.
> C607,608,609,643
> R607,613,644
> VDR601 and 603
> I think Q601/602 are supposed to be 2sc4834 and 2sc4664 may not be a
proper
> sub.
> Jim Myers
> jr.myers@xxxxxxxxxxx
> ----- Original Message -----
> From: <gulftech@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, October 04, 2001 2:20 PM
> Subject: [TechAssist] Sony TV, KV27TS27, Regulation trouble
>
>
> >
> > Friends,
> >
> > Set came in dead.  Q601 & Q602 shorted, fuse F602 and R647 (2.2 ohms)
> > open.
> >
> > Replaced all listed parts and brought up on variac.  Picture folded in
> > middle and pulled in on sides.  The regs (Q601/Q602) run very hot
> > quickly.  Shut it down.  Q613 & D622 are good.  Tried another set of
regs
> > (2SC4664) with no change in symptom.
> >
> > What am I missing?  This is the second time I have seen this.  Didn't
fix
> > the first one.
> >
> >
> > Ken Smith
> > Gulf Technical Services
> > 3034 Gulf Breeze Parkway
> > Gulf Breeze, FL  32561
> > 850-934-8324 (Voice) 850-932-0819 (Fax)
> > ________________________________________________________________
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