[sdiy] [seq] 615 Multi-Trak Memory Battery Probs.

[harrybissell]

There are a couple of possibilities...

one... there is a short, or some chip is drawing more current than it
should

be especially wary of any chips in the battery backed section that have
'unused'
gates. Sometimes one of the unused sections goes bad... and although
functions
still work the power draw goes way up.

A good multimeter could tell you the current draw if it is bad.  Good
behaviour might
be sub-uA range (unreadable) but BAD behavior could be sub-mA range
(probably
readable)

Another option... fit a two cell holder and use two regular alkaline
batteries.  A couple
of C cells would probably last a year or two, even WITH the shitty current
draw.

H^) harry

Dave Garfield wrote:

> Hi there, list!
>
> I have a Sequential 615 Multi-Trak with Rev A boards, that keeps
> discharging memory backup batteries.  Now, I installed a holder and
> CR2035 3V Lithium battery in place of the missing original battery, but
> the two batteries I've used so far don't last longer than about six
> weeks before going completly, totally DEAD!
>
> Has this happened to any of you out there?  Is there a better,
> longer-lasting battery that would be better than the CR2035?  Maybe I
> should suspect a short somewhere, that would slowly drain the memory
> battery?  Are Six-Traks/Multi-Traks known for this, or is mine quirky?
>
> It might not be a world-class synthesizer, but it does have its own
> quirky sound, and I'd kinda' like to keep my sounds from evaporating!
> Thanks for your help!
>
>    Puzzled,
>    Dave Garfield, Boulder, CO USA
>
>
>
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