i3 Prusa Acryl Pro b - motors not working

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alexberlin
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Joined: Mon Sep 28, 2020 4:34 pm

i3 Prusa Acryl Pro b - motors not working

Post by alexberlin » Mon Sep 28, 2020 4:50 pm

Hallo guys,

My Prusa i3 Pro B has M8 and a new and stable PSU.

Actual Supply: 13V in the PSU.

I measure on the motor drivers 5V. I tried it with inverted Dirs but no sound of the motors or any movement.

I could not measure the 12V between the additional motor (1. Pin Black) and and the ground of the fan as described in the tutorial for the board.

I think I watched hundreds of videos and googled quite a lot but nothing worked.

I think the motors dont get the 12V

Can someone help me?
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