I recently bought a set of MTH Milwaukee Road E-8s #20-2304-1. Although they had hardly been run looking at the lack of markings on the rollers, when I ran them they were pulling 4-1/2 to 5 amps on my MTH transformer. Both smoke units were working at first. Later the head "A" units smoke unit quit running, while the rear "A" unit was operating. I turned the units off, and now the amps are down to around 3-1/2 to maybe 4ish. I am wondering what I should be looking for, when I tear into the faulty smoke unit, rather than spend $50 for a new complete unit. What are your opinions? Was it the fan motor, or?? I should also mention that although the units all look great, I noted some weird crystal looking stuff on the "B" unit underframe in one spot on the metal. Is this a form of mold? Thanks.
