[TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound

From: "peter kowalik" <pe.kow@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Fri, 11 Oct 2002 00:15:24 -0500
Hello all
There was a reply from Jeff the man with the Intrepid nature that mentioned
a repair from the Tech CD regarding the SRS module and garbled sound. We're
working on a 27XBR10 with distorted and garbled sound and have narrowed the
fault down to the  SBX-1593-01  SRS module. It seems that it is no longer
available here and we were wondering if anyone might have stock?  Customer
would like the set as the pix is very good but he is not quite ready to
initiate a second home theatre in his house (it's an option- get an all in
one DVD-home theatre stereo and consider the TV as a monitor) Hoping for
good news in the near future. Peter Kowalik    pe.kow@xxxxxxxxxxxx   Keith's
Stereo, Burlington ,Ont.

----- Original Message -----
From: "jorge miret" <jorge_miret@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 10, 2002 8:46 AM
Subject: [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound


>
> Hello:
> I dont know if your model is similar to KV-27TR10 but
> I had a similar problem and in my case was R253
> (27K-1/4W) open and it goes to pin# 1 of IC 201
> (SI-4102).
> Give it a try.
> HTH,
> Jorge.
> --- Damon <DAMON101@xxxxxxxxxxxxxx> wrote:
> >
> > Update, special note about Audio monitor out AND
> > Variable audio output.
> >
> > I found that the AUDIO MONITOR OUTPUT comes from IC
> > 251 the stereo
> > demodulator IC, If that works you know the TV works
> > up to the stereo
> > demodulator,  THE VARIABLE AUDIO OUTPUT LINE FEEDS
> > THE AUDIO AMPS, if those
> > jacks don't work, IC 251 is bad.
> >
> >
> > Then check.......well darn, looks like I left my
> > notes on the boss's table,
> > gotta order that part. Anyways audio input on the
> > AUDIO AMPS is PIN 1, MUTE
> > circuit is on PINS 2 and 4 (+
> > voltage mutes it) and is provided by a parallel
> > muting source ( the mute
> > button on the remote and the speaker button on the
> > back)
> >
> > Damon Brunger
> > damon101@xxxxxxxxxxxxxx
> > Telrad Electronic Services
> > Ft Wayne, IN 46815
> >
> > ----- Original Message -----
> > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, October 09, 2002 7:51 AM
> > Subject: [TechAssist] Re: Sony KV27HSR10 1989 model,
> > loss of sound
> >
> >
> > >
> > > Yes it does, the plug at the back of the K board
> > will have 19 v for the
> > > audio outputs, the plug in closest to the rear of
> > the chassis under neath
> > > will have 3-4 pins nearest the rear with a lesser
> > voltage. I can hear the
> > > outputs actually hiss so I know the outputs are
> > ok, previous repairs to
> > this
> > > model seemed to always end up on the a/v switching
> > circuit located at the
> > > back board where the RCA input jacks are located.
> > Can't tell you which
> > IC's
> > > on the U-Board to test or order, but you can
> > isolate the problem to the
> > > switches if you get audio out of the Monitor out
> > or the Variable output
> > > jacks, AND you hear hissing from the Audio Amps,
> > also you may try using
> > the
> > > Inputs to see if that route produces results,
> > either way try to bring your
> > > schematics and scope with you.....Oh wait a
> > minute, you have a 27", you
> > > might be able to lift that into your truck. I have
> > old folks and a 32" TV
> > > with wings, easier for me to quick scope the unit
> > in the customer's home.
> > > Damon Brunger
> > > damon101@xxxxxxxxxxxxxx
> > > Telrad Electronic Services
> > > Ft Wayne, IN 46815
> > >
> > > ----- Original Message -----
> > > From: "kevinstv" <kevinstv@xxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Tuesday, October 08, 2002 10:28 PM
> > > Subject: [TechAssist] Re: Sony KV27HSR10 1989
> > model, loss of sound
> > >
> > >
> > > >
> > > >
> > > > Damon,
> > > >
> > > > Does it have the stand-alone p/s that is
> > upright?
> > > >
> > > > Kevin Wilks
> > > > Kevin's TV and Video Repair
> > > > Penticton BC Canada
> > > > kevinstv@xxxxxxx
> > > > ----- Original Message -----
> > > > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Tuesday, October 08, 2002 7:33 PM
> > > > Subject: [TechAssist] Re: Sony KV27HSR10 1989
> > model, loss of sound
> > > >
> > > >
> > > > >
> > > > > Just working on one of these units, except
> > it's a 32". Yes, it is
> > > similar
> > > > to
> > > > > the KV27xbr 15. No, the unit does not use the
> > sbx1637 module. Suspect
> > > the
> > > > > A/V switches on the U-Board, I'm presently
> > working to isolate this,
> > need
> > > a
> > > > > schematic to get thru the audio switch
> > circuitry.
> > > > >
> > > > > Damon Brunger
> > > > > damon101@xxxxxxxxxxxxxx
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Peter oliver"
> > <oliver_peter1@xxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Tuesday, October 08, 2002 9:05 PM
> > > > > Subject: [TechAssist] Re: Sony KV27HSR10 1989
> > model, loss of sound
> > > > >
> > > > >
> > > > > >
> > > > > > Too early for that module this set simmilar
> > to XBR common faults are
> > > the
> > > > > > regulators along the center heatsink develop
> > bad connections, also
> > > > > > Pincushion problems from bad coil. the
> > regulator connections cause a
> > > > mirid
> > > > > > of odd problems.
> > > > > >
> > > > > > Peter Oliver
> > > > > > Tucson Radio TV
> > > > > >
> > > > > >
> > > > > > From: kevinstv <kevinstv@xxxxxxx>
> > > > > > Reply-To: techassist@xxxxxxxxxxxxx
> > > > > > To: TECH-ASSIST <techassist@xxxxxxxxxxxxx>
> > > > > > Subject: [TechAssist] Sony KV27HSR10 1989
> > model, loss of sound
> > > > > > Date: Tue, 08 Oct 2002 18:48:19 -0700
> > > > > >
> > > > > > Sony KV27HSR10 1989 model, loss of sound
> > > > > >
> > > > > > Hi fellow techs,
> > > > > >
> > > > > > Does anyone know if this model of Sony has
> > the SBX-1637 sound
> > module?
> > > I
> > > > > > have to do a service call and it would be
> > helpful if I knew what to
> > > > > expect.
> > > > > > Thankyou.
> > > > > >
> > > > > > Kevin Wilks
> > > > > > Kevin's TV and Video Repair
> > > > > > Penticton BC Canada
> > > > > > kevinstv@xxxxxxx
> > > > > >
> > > > > >
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> > > > > >
> > > > > >
> >
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>
> =====
> Jorge Aguado-Puerto Rico
> J.C.Electronic Repairs
> Tel:787-761-0920
> jorge_miret@xxxxxxxxx
>
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Follow-Ups:
- [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound
  - From: Lyles Tv
- [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound
  - From: kevinstv
References:
- [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound
  - From: jorge miret
[TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound

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