[TechAssist] Re: Help with Sony KV27ts36, Blows q601& 602

  • From: "GARY" <gchambe3@xxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 21 Mar 2002 09:47:31 -0500


First, make sure the horiz out did not short again, if it did, replace small
electrolytic in base of horiz driver transistor circuit.
Also many times the small caps in the converter circuit must be changed,
usually marked 224 and 681, six all together.
also make sure the two 82k resistors(in converter circuit) are both in
tolerance,sometimes one will increase in value and off balance the switching
of converter circuit.
to save damage while testing use a variac,start at 0v and slowly increase to
30 v,(while monitoring the 135v)at this point the converter will output
135v.any increase above that means a "no go" so shut it down.
good luck,
GaryCHAMBERS TV
BRADENTON,FL
SINCE 1982
----- Original Message -----
From: "Matt De Young" <gibbys_service@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 21, 2002 8:54 AM
Subject: [TechAssist] Help with Sony KV27ts36, Blows q601& 602


> This unit blows the voltage converter transistors Q601 and Q602 as well as
the fuse resistor.  I have changed the H.O.T. and have soldered all
components in the Horizontal section as well as in the Power supply section.
I have checked the VDR's and they all test open.
>
> Any help is appreciated.
>
> Matt De Young @ Gibbys Electronics
> St. Catharines, Ont Canada
> gibbys_service@xxxxxxxxx
>
> ------------------------------------------
> Make your TechAssist database better!
> Submit Repair Tips here: http://www.tech-assist.org/secure/tip/
> ------------------------------------------
> To UNSUBSCRIBE your email address, click here:
> mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
> Or send a BLANK email with unsubscribe in the
> SUBJECT field to the address above.
>


------------------------------------------
Make your TechAssist database better!  
Submit Repair Tips here: http://www.tech-assist.org/secure/tip/
------------------------------------------
To UNSUBSCRIBE your email address, click here:
mailto:techassist-request@xxxxxxxxxxxxx?subject=unsubscribe
Or send a BLANK email with unsubscribe in the
SUBJECT field to the address above.

Other related posts:

  1. Home
  2. techassist
  3. Archive
  4. 03-2002