just got a rather bad shape poly 6 for $100.
https://www.gearslutz.com/board/attachments/electronic-music-instruments-electronic-music-production/423623d1412877179-battery-rot-poly-6-img_1959.jpg1. powers up.
2. some keys sound.
3. battery has not rotted.
4. makes one sound and no pots work.
5. all switches work/light up.
Insides look great, rear is SMASHED but intact.
Volume pot is shot, (need to press down on it to make it work)
Questions:
FACT: I am unskilled at soldering past a high school level.
My thought was to order a factory battery because I cant jumper diodes and voltages on the charging mod on the coin slot lithium battery mod.
My thoughts were to attempt fixezs on the basic level.
If I cant get it working perfect then start desoldering the chips and sell them after I test they work.