One works , other not , I once had 2 of same size (about) but really heavy 600 lb and 500 I remember cause i got good money on the weight as is $67 and $53 I was like WOW when you take them apart your gain is some wire some motors , the time it takes to tear down a printer and find some small motors and wire and now that you took apart the plastic that you can't really sell to them any more (with out looking dishonest) Some of the older ones have strong steel frames these don't , The boards are supposed to be high grade . but the loss of plastic weight nullifies the gain , I can pull the boards.
I bet - put a new board in & I bet it works.
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