I had a major problem w/ my empeg, completely messed up the display connector from the MB to the display (pins gone, pads removed from the MB -bad-). A fella with the name of "farmtech" on here was able to give life back to my player, it was amazing. Took quite a bit of work, did a custom hardwired display cable from other pads on the mb, etc etc. It looks like he hasn't been on here in a while, but let him know I sent you. He has about 15 years of history as an electrical hobbiest. He didn't overcharge me or anything. If you aren't able to get ahold of him via here, PM me and i'll give you his e-mail address.
good luck