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Diagnosing a 12VS Suitcase X-treme. S/N LF194063. The ONLY thing I can get it to do is display HELP11(communications error). Im hooking it up to a TB302 that works just fine. There is another identical suitcase unit that works just fine when connected to the TB302. Im pretty sure this means the PC1 motor control board is pooched, called miller and that was the first thing they said too. Gun tests ok, motor spins when i give it 24V.. Just wanted to know if anyone else has seen this before I go and buy the 600$ part for the customer...