[sdiy] Oberheim Matrix 6 ---- 3.6v Lithium battery replacement.. or not ?

[Ingo Debus]

> Am 07.08.2022 um 16:33 schrieb Jean-Pierre Desrochers <jpdesroc at oricom.ca>:
> 
> A friend of mine brought me a working Oberheim Matrix 6 keyboard
> that he was worried about the inner memory lithium battery (BR2032)
> being about to die.. and to replace it.
> Well after a quick check the battery was still in pretty good physical condition (no leakage)

I have yet to see a leaking lithium coin cell. Do they leak at all?

Anyway, lithium coin cells are strange. Some keep their almost full voltage until the end of their life with no load (but the voltage drops heavily even with the lightest load), and some have a much lower voltage, even with no load, at the end of their life. A static RAM, when idle, can be considered as „no load“.

Maybe the battery in that Oberheim already has been replaced? I remember on my DX7 the lithium battery lasted for about 20 years.

However, be careful when soldering lithium cells! A colleague of mine once had one exploding right into her face as she tried to desolder it. Wear goggles.

Ingo
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