SAT Bat Transplant

[dale r fox]

Thanks for the additional input and clarification.

Dale Fox

On Tue, 13 Jun 2000 02:32:07 -0300 piano.tech@ns.sympatico.ca (John Ross)
writes:
> Hi,
> The button cell is used when the capacitor, that charges every time 
> you turn
> the
> unit on, uses it's charge up. That charge acts like a battery, and 
> holds the
> memory,
> in RAM, till it is used the next time. That is why you should turn 
> the unit
> on, at least
> once a week, when not in use.
> If the unit is sent back, and it has been a while since a change,
> Inventronics, will
> change the battery pack, the button cell and the capacitor.
> I found this out, when I didn't even turn my spare unit on for a 
> while, and
> it went to
> lo battery indication, and even after a charge, I couldn't tune with 
> it. It
> had lost it's
> housekeeping memory.
> So after two or three battery pack changes, send it back for the 
> major
> change, since
> doing all three yourself, could result in memory loss. No danger of 
> loss in
> the SAT lll,
> it has a flash memory in the RAM. (I think)
> Regards,
> John M. Ross
> Windsor, Nova Scotia, Canada
> ----- Original Message -----
> From: "dale r fox" <foxpiano@juno.com>
> To: <pianotech@ptg.org>
> Sent: Tuesday, June 13, 2000 1:03 AM
> Subject: Re: SAT Bat Transplant
> 
> 
> > Hey Jim,
> > be aware that there is another battery in the SAT II.  It is a 
> Lithium
> > Ion button cell (quarter sized)  mounted on the internal circuit 
> board.
> ryhgb > You have to remove a few small phillips head screws on the 
> outer PC
> board
> > to reveal the little feller.  I'm not sure but I do believe that 
> it is
> > the one which holds memory when the unit is turned off and the 
> power cord
> > is pulled.   That one being old may lead to the eventual  loss of 
> your
> > operating system.  IOW's,   it won't work no how.   But you won't 
> get a
> > low bat signal for that battery.  Some of this is just a guess but 
> I was
> > once a genuine electronic wiz guy for the US Air Farce.   (Used to 
> be Air
> > Force but Billy Jeff has pretty much taken the steam out of any 
> military
> > we had.  Some think that is a good thing but I'd likely disagree 
> with
> > em.)  The new SAT III uses a different type of chip to hold the OS
> > software so likely doesn't need this other battery..     Your PC 
> has a
> > similar battery to hold internal clock and stored BIOS info when 
> the
> > confuser is unplugged.   On the good side,  with 1200 mah nicads 
> you'll
> > be able to power not only your SAT but a small city in Ecuador as 
> well.
> >
> >
> > Dale F
> >
> > On Mon, 12 Jun 2000 15:24:55 EDT JIMRPT@AOL.COM writes:
> > > re: Battery replacement on SATII
> > >
> > > Well it took longer to worry about than to do it! :-)
> > > I used 4 AA, 1200mah, ni-cad industrial batteries, some tape 
> solder
> > > and PVC-E
> > > glue and the deed is done....my "lo-bat" notice is gone, my 
> memory
> > > is intact,
> > > and the new batteries are charging just fine.
> > >  I believe that my main problem was a severely corroded solder
> > > connection on
> > > the negative wire lead and that if I had just cleaned it up and
> > > resoldered
> > > the connection everything would have been fine.  But since I had 
> the
> > >
> > > batteries and other stuff, and the unit is 4 years old, I 
> decided to
> > > just go
> > > ahead and do the transplant.
> > >  Thanks for the help and encouragement.
> > > Jim Bryant (FL)
> >
> > ________________________________________________________________
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> 

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