[TechAssist] Sony TV, KV27TS27, Regulation trouble

  • From: gulftech@xxxxxxxx
  • To: techassist@xxxxxxxxxxxxx
  • Date: Thu, 4 Oct 2001 14:20:55 -0500

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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