Jay,
I have two 2465's here, and they're known for quite a few gremlins, including NVRAM battery issues, among other problems.
In my case, I have two good ones, and I can have an excellent one by parting them together and renovating. I'll cast off the remaining wreck.
You can do the same with yours. It's quite an old scope, repairable, with good manuals, but far outside any warranty support. Why did you buy it then? It isn't reasonable to expect these to be without major flaws needing to be addressed. If you're ready to do that work, dive in.
If you're not willing to do all that work, you should return it and buy a new overseas model with warranty. Rigol, Instek, Owon, etc.
It's something like owning an older car. Much more repairable, but needing much more time into it.
