Solar lights that may be repairable (Brecon LD3)

Two lots of string lights, one is working but very faint, the other is not working but I think someone who knows a bit more about what they are doing and enjoys fiddling with things like this could probably get them working again. I intended to but after 3 months have done nothing so I probably won't! Ditto a selection of non-string lights. Will be put out for recycling if no takers.