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Korg® Poly-61M    Battery Replacement

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The Poly-61's envelopes have now been repaired but a test of the back-up battery, seen here, showed it to be extremely low in voltage.

The battery was therefore unsoldered and removed from the CPU board.

The old "VARTA" Battery

Here you see the old battery alongside a new replacement.

The new battery is smaller in size due to its lower capacity but is a suitable, 3.6V rechargeable supply.  The capacity isn't crucial in this trickle-charge application.

It's also a nickel metal-hydride battery instead of a toxic and now restricted nickel cadmium replacement.

A larger capacity battery for the Korg Poly-61 and Korg Polysix is for sale on our Battery Page.

New 3.6V Ni-MH Battery with 3 Solder Pins

Here you see the new battery installed on the CPU board.

New Battery Installed in the Korg Poly-61

Here, the CPU board has been reinstalled into the Korg Poly-61M.

Notice that new cable ties have been installed to replace those previously cut, keeping the cables neatly dressed and secure.

Closing Up the Korg Poly-61
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