Roland JV-80

Roland JV-80, keys not working and missing 4 keys. Electronics are fine when I last checked, so I guess it could be repaired.
While this was in storage in a hot basement the glue which holds the keys together melted. We took all the keys off to try and clean and re-assemble, but didn't do a very good job. Hence the keys are a bit stuck and 4 are missing. New keys can be bought either from Roland or here on ebay, and I'm sure someone with the will/know-how could restore this instrument to its former glory.
I also have a vintage synth sound card to go with it which I'm listing separately.
Also I can't find the power lead. If someone was really interested I could clear out the cupboard and I'm sure I'd find it, but it's just a generic power lead like PCs use.