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

  • From: "Watcher Watcher" <Watcher000000000@xxxxxxxxxxx>
  • To: "techassist" <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 4 Oct 2001 14:38:10 -0700

Sorry, I forgot about these items too. Might want to replace them too, as they 
can cause the same original problem. Seems to me I remember something about the 
VDR's on this set too.
REPLACE C609, D610 ON D BOARD, PN 8-719-510-64 S2LA20F DIODES  
Affordable John
Affordable Electronics
Tumwater Wash 98501
360-786-9507

----- Original Message -----
From: Watcher Watcher
Sent: Thursday, October 04, 2001 2:22 PM
To: techassist
Subject: [TechAssist] Re: Sony TV, KV27TS27, Regulation trouble

REPLACE R647 Q601 Q602 D622 & C650 CAPACITOR


----- Original Message -----
From: tvdoctors@xxxxxxxxxxxxx
Sent: Thursday, October 04, 2001 12:31 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Sony TV, KV27TS27, Regulation trouble

Check horiz. drive transformer and any caps and resistors around the 
transformer.


> ** Original Subject: [TechAssist] Sony TV, KV27TS27, Regulation trouble
> ** Original Sender: gulftech@xxxxxxxx
> ** Original Date: Thu,  4 Oct 2001 14:16:47 -0500 (EST)

> ** Original Message follows...

>
> 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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>** --------- End Original Message ----------- **

>


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