we got a BL V3 back from a customer. One motor didn't run.
Fortunately he sent also the motor with attached connector.

I was searching a while until I found the reason:

externer Link:
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(Video) - (listen to the multimeter)

Basically the connector looks good:
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This is how it looks inside:
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Seems to be flux from soldering.

« Bearbeitet von HolgerB am 15.05.2014 15:47. »