Only thing on your list I might be able to help with is your clock resetting.

Those are prone to having cold solder joints, mine had that issue. They are easy to remove and disassemble. It's also relatively easy to reflow the cold solder joints(which will be obvious compared to the joints that are good).

I believe there's information on this forum about it, and I've seen a YouTube video on how it comes apart and what joints to look for. Mines been flawless since.