[sdiy] Alpha Juno battery replacement

[Jimmy Moore]

Thank you!!!  just removed mine.

Syntaur looks to be backordered with replacements.  can anyone recommend an
alternative solution?  Preference for a battery that isn't spot welded to
the clip.

On Tue, Sep 1, 2026 at 2:06 PM Richie Burnett <rburnett at richieburnett.co.uk>
wrote:

> Just changed the battery in my Roland Alpha Juno 2 that was likely 40
> years
> old!  The old Sanyo CR2032 coin cell looked fine from the top (+) side,
> measured 3.295v and hadn't shown any battery warning message on the
> synth's
> display.  In fact it's terminal voltage was higher than my brand new
> Panasonic CR2032s that both measured 3.278v.  However, when I de-soldered
> it
> the hidden underside was covered in tiny crystals and green crud (>.<)
> Looks like I got there just in time!  So, don't wait for the low battery
> message, or visible corrosion, and don't wait for 40 years before changing
> it!!!
>
> For anyone with an Alpha or MKS-50 there's an excellent step-by-step guide
> here:
>
> https://llamamusic.com/mks50/MKS-50_battery_replacement.html
>
> -Richie,
>
>
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