[sdiy] Kawai SX-210 repaired !!

[gilwein at walla.co.il]

Thanks.

Isn't it just easier to place the new NiCd battery far from any other component ?

Just a thought...

The current battery is the original one, I had this synth for about 17 years now...

It's supposedly been used only 3 years before I got it ...

<ka4hjh at gte.net>
Re: Re: [sdiy] Kawai SX-210 repaired !!

>The "dirt" was not the green acid ususally leaking from batteries.
>It was rather black colour, but the place it was found makes me think it
>was acid stuff....
>It was just as close to the battery than to anything else.... strange...

No idea. But it makes for a better ending to the story.


>Well, I understand a standard battery cannot be used as replacement,
>what type of battery should I use that doesn't require any mod to the
>circuit ?
>Is there such anyway ?

Assuming it's a NiCd all you need is one with the same voltage and capacity
rating.

The reason for replacing it with an alkaline or lithium battery is because
catastrophic leakage is much less likely. NiCd's are notorious for this.
They'll work fine as a memory backup for years and then one day... It's
like playing battery roulette. I'm sure a number of other subscribers have
had the same experience with this as I have--probably more--which is why
the general consensus here has always been to NOT use a NiCd. We've been
"burned" too many times before.

>moreover, the battery looks (visually) completely as new,
>no leakage has been seen on it. The dirt was not very close to the battery
>but about 1.5cm
>far from it ...

That's good, but you have no way of knowing for sure how old the battery
is. If it's the original battery it's not a question of if it will fail but
when. I don't want to scare you but like I said, I've seen what can happen.
This isn't a bad synth--a friend of mine has a similar model. Hate to see
anything happen to it. While you've got it torn apart is a good time to do
something about it. The modification required is minimal, but you'd have to
ask somebody else. I seem to recall a discussion about the merits of
various types of diodes the last time this came up.

This is why you don't see NiCd's being used for memory backup anymore. A
lithium battery will last 5-10 years and then die without harming anything.
-- 

Terry Bowman, KA4HJH
"The Mac Doctor"

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