Another option - buy Todd Tuckey's nonworking brick as long as it is in good condition.
Replace the Bridge Rectifier, which is mounted on the underside of the brick, plus Big Blue. Both items available from Real Bob Roberts parts website. These are generally the items that fail on these bricks.
Ahh no sweat. I wasn't really lookijng to sell any way. I need to get about 4-5 up and working for some repairs I am doing. You should see some of these bricks!!! I've got a gag photo coming up soon (soon is realtive of course. for me it could be a month) I am still sometimes amazed at the shit people do to get a game running. You'll understand when I post.