[TechAssist] Re: SONY KV-27TS32

  • From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 2 Jul 2003 20:18:47 -0400

Kevin,
It is my impression these are to protect the rest of the circuit.
From the looks of those most recent one I had, they work. The PCB was 
physically burnt, yet the only thing
I found bad was the fuse and replaced the VDR's, just in case.

Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net

----- Original Message ----- 
From: "Kevin" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, July 01, 2003 8:48 PM
Subject: [TechAssist] Re: SONY KV-27TS32


The only way that I know when these go bad, is when they have a reading
at high meg on my Fluke.  When bad they read about 10-50k =D9.  I assume
that when they read open, that they are good.  Does anyone know why the
VDR's fail?  Is it due to a power surge? =20

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx=20
=20

-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Intrepid Video
Support
Sent: Tuesday, July 01, 2003 2:49 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: SONY KV-27TS32

Kevin,
These VDR's are two diodes back-to-back, so I'm not sure how to test if
they were opened.
If you find other problems, like a shorted HOT, that may be all that is
wrong with the unit.
Last one I replaced the VDR's non, the only problem found was a burnt
fuse and a burnt trace. Due the
extent of board damage, I felt it best to take other's advice and
replace the VDR's, to improve
reliability.
If someone knows a sure file way to test these, w/o lugging a scope to
the customers home, I am all ears.

Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net

----- Original Message -----=20
From: "Kevin" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, July 01, 2003 3:40 AM
Subject: [TechAssist] Re: SONY KV-27TS32


Jeff, why should all the VDR's be replaced?  I have not done this and
have never had any problems.  Do you know what causes the VDR to fail?
Thanks.

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx


-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Intrepid Video
Support
Sent: Monday, June 30, 2003 6:05 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: SONY KV-27TS32

Medi,
I've been told all the VDR's should be replaced. At their low price, it
shouldn't break you, but maybe add
reliability.

Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net

----- Original Message -----=20
From: "Nova Service Center" <techassist@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 30, 2003 4:32 PM
Subject: [TechAssist] SONY KV-27TS32


Hi Everyone
The customer complaint was that the Sony TV ( Model # KV-27TS32 ) was
dead . I found 2 regulators (
2sc4834 ) and horizontal output transistor ( 2sc4927 ) were short. Also
.1 ohm resistor was open and VDR
601 was bad. replaced all tv turned on and worked for 10 minutes. The a
big sound and all the parts except
VDR 601 went bad again. The VDR 602 and 603 looks good.I don't know what
I am missing . Any suggestion
would be appreciated.
Nova service Center
240-632-2994
Medi
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