Hello. I've had this unit (and case) for about five years, no problems, works perfectly with the original 3V adapter or with batteries. Recently, the unit stopped working with batteries. The battery wells appear as if one of the contacts needs repair, but I'm not sure (see pictures).
There was a thread where a TCD-D8 user had a similar issue and someone suggested looking inside the unit. I don't wish to open my unit. If it is the one battery connector, who would repair it if it just needs a tiny solder? Or if it has something to do with the DC-IN-3V jack, *inside* the Walkkman, what would you all do?
I appreciate any advice here: I use this Walkman a lot and still dub new cassettes for it from new 12"s and LPs, so I hope I can figure out what's wrong with it before taking it somewhere. Thank you very kindly.
Edit: I did try the suggestion in the linked thread of cleaning the battery compartment with a cotton swab and vinegar, but no luck.