[sdiy] Alpha Juno battery replacement

[Peter Pearson]

http://musictechnologiesgroup.com/blog/?p=257

CR2032 battery holders don't fit the footprint of the old CR2032s with
solder tabs.  I recommend getting some of those PCBs in the link above
ordered and installing a battery holder in its place.  Then next time you
need to replace the battery you don't need a soldering iron.

On Tue, Sep 1, 2026 at 9:31 PM Jimmy Moore via Synth-diy <
synth-diy at synth-diy.org> wrote:

> 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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