Vintage boombox, that currently works on AC only, I tried batteries but couldn’t get it to work, the battery compartment does not look terrible, so not sure what’s going on there.

The cassette works great, the AM radio works fine, the line in works fine, but the FM only works sometimes…

All of the sliders and selector seem to work well, except for the FM not working, maybe it is a selector issue, and the volume sliders are jumpy sometimes and not always smoothly changing the volume.