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

From: jorge miret <jorge_miret@xxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Thu, 10 Oct 2002 06:46:39 -0700 (PDT)
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
> > > > >
> > > > >
> > > > > ------------------------------------------
> > > > > To REMOVE your email address, click here:
> > > > >    http://www.tech-assist.org/unsubb.html
> > > > > To CHANGE your email address, click here:
> > > > >   
> http://www.techassist.net/forms/change.html
> > > > > ------------------------------------------
> > > > > ***NEW*** Tips Added Instantly!!!***
> > > > > Submit Repair Tips here:
> > > > > http://www.tech-assist.org/secure/tip/
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
>
_________________________________________________________________
> > > > > Join the world's largest e-mail service with
> MSN Hotmail.
> > > > > http://www.hotmail.com
> > > > >
> > > > > ------------------------------------------
> > > > > To REMOVE your email address, click here:
> > > > >   http://www.tech-assist.org/unsubb.html
> > > > > To CHANGE your email address, click here:
> > > > >  
> http://www.techassist.net/forms/change.html
> > > > > ------------------------------------------
> > > > > ***NEW*** Tips Added Instantly!!!***
> > > > > Submit Repair Tips here:
> > > > > http://www.tech-assist.org/secure/tip/
> > > > >
> > > >
> > > > ------------------------------------------
> > > > To REMOVE your email address, click here:
> > > >   http://www.tech-assist.org/unsubb.html
> > > > To CHANGE your email address, click here:
> > > >   http://www.techassist.net/forms/change.html
> > > > ------------------------------------------
> > > > ***NEW*** Tips Added Instantly!!!***
> > > > Submit Repair Tips here:
> > > > http://www.tech-assist.org/secure/tip/
> > >
> > > ------------------------------------------
> > > To REMOVE your email address, click here:
> > >   http://www.tech-assist.org/unsubb.html
> > > To CHANGE your email address, click here:
> > >   http://www.techassist.net/forms/change.html
> > > ------------------------------------------
> > > ***NEW*** Tips Added Instantly!!!***
> > > Submit Repair Tips here:
> > > http://www.tech-assist.org/secure/tip/
> > >
> > >
> >
> > ------------------------------------------
> > To REMOVE your email address, click here:
> >   http://www.tech-assist.org/unsubb.html
> > To CHANGE your email address, click here:
> >   http://www.techassist.net/forms/change.html
> > ------------------------------------------
> > ***NEW*** Tips Added Instantly!!!***
> > Submit Repair Tips here:
> > http://www.tech-assist.org/secure/tip/
> >
> >
> 
> ------------------------------------------
> To REMOVE your email address, click here:
>   http://www.tech-assist.org/unsubb.html
> To CHANGE your email address, click here:
>   http://www.techassist.net/forms/change.html
> ------------------------------------------
> ***NEW*** Tips Added Instantly!!!***
> Submit Repair Tips here: 
> http://www.tech-assist.org/secure/tip/


=====
Jorge Aguado-Puerto Rico
J.C.Electronic Repairs
Tel:787-761-0920
jorge_miret@xxxxxxxxx

__________________________________________________
Do you Yahoo!?
Faith Hill - Exclusive Performances, Videos & More
http://faith.yahoo.com
------------------------------------------
To REMOVE your email address, click here:
  http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
  http://www.techassist.net/forms/change.html
------------------------------------------
***NEW*** Tips Added Instantly!!!***
Submit Repair Tips here: 
http://www.tech-assist.org/secure/tip/
Follow-Ups:
- [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound
  - From: peter kowalik
References:
- [TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound
  - From: Damon
[TechAssist] Re: Sony KV27HSR10 1989 model, loss of sound

Other related posts:
