My Acela was running fine until this morning. When I started it up, it went through the normal pantograph dance except one pantograph no longer moves. The motor makes no sound. I've opened up the non-powered unit and could visibly see one motor move. I checked the wiring and nothing seems out of the ordinary to my eyes. what I would like to do to isolate the issue is disconnect the dead motor from the PCB and put power to it directly. If it comes to life then I guess the Board is the issue. However, I'm uncertain as to the DC voltage I should apply. I don't want to fry it but also want to be sure I put enough to it. I was thinking 9 volts as I read that in some other thread. Oh, one other question to anyone (ALEXM are you there? :-) ) that's removed the motor assembly, which and how many screws should be removed. I don't want to remove one and have some spring pop out and disappear to that place where socks in the dryer go. Thanks.
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