Solved Solved - Again short-to-ground on replacement board - Duet 2 Wfi
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the chinese suppliers source the parts from various places where they can get cheap deals.
this mean that the motors might look the same, but are actually manufactured by different companies.any part you receive from chine should be checked before using (especially hotbend and heater catridges) fans etc..
some shady dealer will just relabel stuff if they run on of stock.