Re: Synth "Internal Battery" Replacement

[".David.Auker." <DaVAuk@Hevanet.com>]

Duncan, Thanks for the advice.  Got the new battery (CR2032), and since I
don't want to start my soldering education with this project, a friend will
do it Wednesday.  The fitting is quite flush on the board; there's really
not any wires coming off it, just the wires that "BatteriesPlus" 
spot-welded
onto the battery (kind of a fragile weld, as I've already snapped one off
merely moving the wire...hopefully battery #2 is better!).

I may look into getting a "battery holder" from Radio Shack, as that's a
one-time solder, then you just pop the battery in.

As far as lost data, I think I'm ok.  The battery has been bad for a while,
but the nature of the SY77 is a "self-fix," as it's a synth work station,
with a floppy disk drive.  I've got disks with "all data" ready to load 
back
in.

David

----- Original Message -----
From: ".David.Auker." <DaVAuk@Hevanet.com>
To: "David Auker" <DavAuk@Hevanet.com>
Sent: Monday, July 12, 2004 8:05 AM
Subject: Re: Synth "Internal Battery" Replacement


> RE: Synth "Internal Battery" Replacement
> ----- Original Message -----
> From: goddard.duncan@mtvne.com
> To: Loopers-Delight@loopers-delight.com
> Sent: Monday, July 12, 2004 3:26 AM
> Subject: RE: Synth "Internal Battery" Replacement
>
>
> >>My Yamaha SY77 needs a new internal battery.  I can get to it fine (a
mere
> 20 screws), but it's soldered in.  I have a friend with soldering skills
> that's going to look at it.
> Just wondering if any of you have had to do this...any success stories
> (hopefully no failure stories!)?  I've gotten a few tips from the
> rec.music.makers.synth group, like be careful of the thin tin leads...  I
> wish I could just clip the old out, clip the new in!<<
> david- it's better to change these things too often than not often 
>enough-
> aswell as losing the memory of whatever system is involved (drum machines
> can be heartbreaking, especially), you run the risk of the battery 
>leaking
&
> damaging the circuit board it lives on. this fate befell many korg poly6
> synths.
> my preferred technique is to cut out the old battery so that the wires 
>are
> left quite long. then twist these wires & the wires of the new battery
> together so that the new battery is mechanically secure. this minimises
the
> soldering time required & thus the heating of the board & the battery,
> neither of which particularly like getting too hot. & obviously, observe
the
> polarity.
> if you're changing the battery before it has failed, you will need to do 
>a
> sys-ex memory dump or similar in order to save y'r data.
> duncan/r.m.i.
>