Dan that is a Bally as2518-54 rectifier board.
Sorry mate, dont have one of them I dont think they are all that common . If it was the standard Bally rectifier I have a few spare of those and also Rottendog and GPE have a low cost replacment for these available but not one for this particular Bally PSU.
From what I can see it shouldn't be all that hard to rebuild, If you wanna send it to me I can rebuild it for you if you cant get another one.
