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

  • From: "Shoreline Electronics" <jstielau@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 4 Oct 2001 17:18:28 -0400

C613(.047/400v) Leaky  

Jeff Stielau
Shoreline Electronics Repair
125 Beechtree Lane
Westbrook,CT 06498
860-399-1861 Voice
860-664-3535 Fax
jstielau@xxxxxxxx                     

----- Original Message ----- 
From: <gulftech@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 04, 2001 3:20 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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