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

  • From: daryls_tv@xxxxxxx
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 26 May 2004 09:38:13 -0600

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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