[TechAssist] Re: Sony KV32XBR96S (repeated audio amp IC failure)
- From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 28 Jun 2004 11:03:10 -0400
Is he using External Speakers during the Failure?
Steve Hearns
Technotronic Dimensions, NY [USA]
WWW.TECHNOTRONIC-DIMENSIONS.COM
1-877-817-9885 (Voice / Fax Toll Free - US Only)
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 28, 2004 8:24 AM
Subject: [TechAssist] Sony KV32XBR96S (repeated audio amp IC failure)
I have a customer (who is an electronics engineer) with a Sony KV32XBR96S
who brought in his set (as he lives outside my in-home service area) back in
January for a dead set condition. I had found the front audio amp IC
(IC1401) blown with a hole in it. There were also other damaged components
as well that were replaced with Sony originals. Here is a list of those
parts:
IC1401
IC1501
D1409
D1410
D1411
C661
C662
C668
VDR602
R623
Everything was fine until the beginning of June when the customer once again
brought it in for a dead set condition again. This time I found and replaced
the following components with Sony originals:
IC1401
D1409
D1410
D1411
I completed the repair on Friday, 06/18/2004 and let the set run continously
around the clock until he picked it up on Thursday, 06/24/2004. I had
informed the customer that IC1401 once again had a hole blown in it and had
him check the external speaker wire connections to make sure that none had
excessive length of exposed bare copper at either end when he returned home.
The set ran great Thursday, Friday, and part of Saturday but then the
customer states he lost audio for about 15 minutes, then lost the picture,
smelled burning, and the set returned to it's same old dead set condition. I
just got off the phone with him and explained that it sounds like that
IC1401 may have blown again but I am at a loss to explain the reason for a
repeated failure and that I would pose this question to my fellow
technicians on the various email forums to which I am a member. So now let
me request your collective ideas!
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
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