[TechAssist] Re: Sony KV32XBR96S (repeated audio amp IC failure)
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 28 Jun 2004 09:46:22 -0500
Electroinics Engineers scare the krap outta me, no common sense! Does he
by any chance have external speakers connected to the tv AND to a stereo
system so that when he turns on the stereo he is blasting a couple
hundred watts into the tv speaker jacks? Now a highly intelligent
Electronics Technician........there ya go......lots of common sense!
*******************************************************************************************************************
Since 1972
Jim Myers
Telrad Electronics
Fort Wayne, Indiana
Gemini Computer & TV wrote:
> 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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