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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 due to improvements in technology, but is the required 3.6 volt Ni-MH (Nickel-Metal Hydride) type, with the same solder-pin arrangement.

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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