Korg Poly800/EX800 Users

Hi Michael,

There isn’t really any easy way to put a battery holder in the normal place on those old boards. I usually put a CR2032 holder way over on the little board with 3 trimpots, over beside the C cell holder. There is already one little hole drilled in it on the far side of the trimpots. I just measure the right location for another hole, drill it, stick the battery holder in and bend the solder tabs so it doesn’t fall out. It needs to be a very, very small hole. So, here is how I do it:

1 – Remove the main board.

2 - Remove R1 and D1 (in the corner near where the A/C adapter plugs in).

3 – Remove the little board with the 3 trimmers and drill another hole for the battery holder.

4 – Put the battery holder in and solder black and red wires to it. (red is positive).

5 – Attach the other end of the wires to the holes where D1 came from. (red near the edge of the board and black near the “D1” label)

Stick in a new CR2032, reload your patches, and you should be all set.

Don Backshall