Went to a amatuer radio fleamarket sunday and found a 29b with the 2b logic pak for $25 bucks. Sweet deal If i dont say so my self. Ive been on the hunt for the last couple years, I always lost ebay auctions for them. So go figure that it did'nt work when I got it home, when i turned it on i got random characters and no self test. I tested the data bus on the micro and it seemed to function. So for the hell of it I decided to check the scratch ram (2114p-25) and one of them was shot so i replaced all 4 anyway. Now it works