Cyberpluckers can point you to a repair person. It might be something inexpensive, like strings that need to be re-placed. the whole 37 string set cost about $35.00, and you will need to get someone to re-string it. I would estimate that you will have about $100.00 in replacing the strings. If the pegs holes are loose, you can really do some damage seating them yourself with a hammer. Itcan work, but you might split the harp. If it needs felts, you can figure another $75.00.
    Most of these used harps are available for less than $50.00. Harpers will occasionally buy them and re-build them as diatonic harps, with new strings, felts, springs, etc. You'll have about $250.00 in it, which is the price of a comparable new one.