Replacing the Battery on an Ensoniq KT-88 Electronic Keyboard

I replaced the battery on my Ensoniq KT-88 electronic keyboard today. It wasn’t hard. Took about 45 minutes of unscrewing, fiddling with connectors, and soldering. (actually, the keyboard is on long-term loan from a good friend :-) )

I bought the battery from Syntaur. Maybe I could have found it for a few dollars cheaper but it wasn’t expensive and I wanted to make sure it was a good battery and had the right tabs on it! These guys rock.

Here she is, ready to go
Take all the screws off of the flat back plate. I counted… umm, a lot. I counted 3 types of screws so keep them separate for reassembly.
Unhook all the connectors, plastic pins, and screws from the motherboard carefully. A flathead screwdriver helped with leverage
Bjonk, it’s on my workbench!
There’s the culprit. Multimeter said 0.0 volts.
I just snipped it off and…
… soldered the new battery in place!
3 volts, yay!
It powers up without any trouble :-)

After I was done replacing the battery, none of the controls worked! Argh! The internet (local archive) told me that to reset the Ensoniq KT-88 “PRESS EDIT/SEQUENCES (PRESETS). PRESS AND HOLD THE UPPER 9 BUTTON AND THEN PRESS THE LOWER 9.RELEASE BOTH AND PRESS YES AT THE PROMPT.”. Thanks to

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