Been there, done that... and I agree with Jim. Excluding Smith & Wesson, most of these little revolvers were second-line quality and worse, and they date from the late 19th to middle 20th centuries.
Other then simply being worn out, the most common problem is a broken trigger or main spring. The mainspring is easy to replace in most cases, the trigger spring less so. Generally speaking shooting them isn't advisable.
I might be able to give you better advise if you explained exactly what is wrong, but the best answer I have at the moment is to mount it in a picture frame and put it on some wall.