I looked up the Celestron CGE site & they have motor controller
firmwares on their site (bottom of page)..in the "support page".
I suspect this updates the motor controllers via computer link, it's an
exe file. Thus I'm thinking the ICs are micro-controllers, not eeproms
If this is so, maybe you can change the IC to a new one & flash re-program it?
You need to peel back a sticker to read the IC part numbers. Of Ask if someone knows the Manufacturers Reference Number (MRNs).