Sega CD corrupt ram?

[Suteneko]

Most likely it is a bad SRAM.

While the issues I had gave out different errors, I think the repair log I posted about it should be helpful:

When your games go on the fritz - Suteneko's repair & mod thread.

Replacing the Mega CD Internal Battery: In the previous post a few of you might have wondered why I didn’t have any mention of replacing the soldered in ML2016 T25 rechargeable battery (25 mAh). There is a good reason for that and I wanted to create a separate post dedicated to the Mega CD internal Memory and rechargeable battery circuit. Unfortunately ML (Lithium Manganese Dioxide) type rechargeable batteries are no longer produced and even worse the ML battery charging circuit is not compati…