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

  • From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 4 Oct 2001 14:49:14 -0500

Not to imply that this will fix your problem but R647 was changed to a 1.0
ohm 1/6w p/n 1-249-381-11.
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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