It's packed in!

Unlocked it the other week - refused to lock up again... I can still use the key though.

The central locking itself works fine but the alarm/remote bit no longer works...

I've stripped down the key and cleaned it all up... the little neon lights up nice and bright on both keys and previously it had an excellent range on it...

Any ideas where I might check to get it fixed? - I really could do with the alarm working where I live.