I also purchased 3 of these on ebay, and I'm looking into connecting them up. I have a Operating manual, but could really use a copy of a Repair/Service Manual. If anyone has a copy of this that could be emailed to me it would really be appreciated. I have dissassembled the units, and all things look okay. But I need more info to spot check continuity etc .
PCUSER mentioned havien a repair manual for this monster.