[TechAssist] Re: Magnavox 20MS233S, no or very little sound

  • From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 26 May 2004 23:51:04 -0400

Perhaps in your neck of the woods.
I repair many items that can be replaced for less than $300.
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com  www.tech-repair.net
----- Original Message ----- 
From: "Jerome Silverman" <greentron@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 26, 2004 9:46 PM
Subject: [TechAssist] Re: Magnavox 20MS233S, no or very little sound


Its good to be capable of changing surface mount components, but its almost
impossible to operate a business fixing things that can be replaced for less
than $300.
Jerry Silverman
Greentron Inc
4 Newland Ave Greenville SC 29609
864 232 3889 Fax 271 2080
greentron@xxxxxxx
----- Original Message ----- 
From: "peggs" <peggs@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 26, 2004 5:58 PM
Subject: [TechAssist] Re: Magnavox 20MS233S, no or very little sound


> You need to use ChipQuik to remove the old chip,and to install the new
one.
> It's really quite easy with ChipQuik.
> There is a flux type substance that you put on all the pins of the old
chip.
> It's applied with a syringe.Then there is a special solder that is used
> that stays
> in a molten state long enough to remove the chip.
> No cutting pins,no damage to the Traces/foil pads.
> Clean up the area,I use q-tips and chemtronics 2000 degreaser.
> Next Tack the new chip in by soldering one or two pins(corners).
> Then apply the flux type substance again to all the pins,and resolder.
> Don't worry about trying to do one pin at a time,as the flux helps keep
> each pin's solder away from each other.
>
> Practiced on an old board first.Remove a chip,clean it up,and reinstall
it.
> You'll see it's much easier than you think.
>
> I charged $95 to repair the set I did a week or so ago.
>
> Peggs
>
> At 08:38 AM 5/26/04, daryls_tv@xxxxxxx wrote:
> >Thanks to Dave Huston, Peggs, and Jeff D. for the help.  The trouble
> >strongly points to the 64 pin postage stamp IC (IC7000).
> >I now have a couple of other questions or so ....
> >In the past when I suspected a postage stamp IC to be defective, I
> >informed the customer of the usually high cost of the IC and the
> >labor.  All have always declined the estimate and purchased a new
> >replacement set.  Now with this set being almost new, it is going to be a
> >bit touchy to tell the customer to buy a new set.
> >Next question... If the customer opts to have the set repaired, how do
you
> >go about changing such an item?  The foil is so small and fragile
looking,
> >I would suspect that he foil can be damage quite easily, not to mention
> >trying to work in such close tolerances with respect to the tiny pins.  I
> >figure a starting point would be to cut the pins to remove and unsolder
> >the pins very carefully.
> >Now for the final question... Is the set really worth the time and
> >expense?  A new set at Office Max was advertised over the weekend for $79
> >after the rebates.  I figure the parts and labor will run more than that
> >provided I am successful in doing the micro surgery.  I guess I may have
> >to change my MOS to read "brain surgery while you wait" :-).
> >Daryl
> >Daryl's TV
> >2402 Wyoming Ave.
> >El Paso, TX  79903
> >daryls_tv@xxxxxxx
> >www.angelfire.com/tv2/daryls_tv
> >
> >----- Original Message -----
> >From: daryls_tv@xxxxxxx
> >Date: Tue, 25 May 2004 15:20:14 -0600
> >To: TechAssist@xxxxxxxxxxxxx
> >Subject: [TechAssist] Magnavox 20MS233S, no or very little sound
> >
> > >
> > > Hi,
> > > This Magnavox, model 20MS233S, mfg. 7/2003, has very little sound on
> > some channels an no sound on some.  The stations that are broadcasting
> > stereo displays "mono" on the screen.  The audio jacks work and the
> > volume bar also functions.  I have ESR'd the electro's, looked for open
> > resistors and poor connections.... none found to be the problem.  I did
> > find a service manual listed but $50 plus S/H is out of the question
plus
> > the repairs.  This set will not justify those kind of expenses.  I
should
> > go buy a new set at $79 and tell the customer I repaired it and collect
> > the money.  However, I don't think the customer is that gullible.
> > > Any help or advice would be appreciated to save this repair.
> > > Daryl
> > > Daryl's TV
> > > 2402 Wyoming Ave.
> > > El Paso, TX  79903
> > > daryls_tv@xxxxxxx
> > > www.angelfire.com/tv2/daryls_tv
> > >
> > >
> > > --
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> > >
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