First my printer was runnig well, but on the next day I've aborted a print some seconds after it has began to run.
So now I have a big problem i cant' solve.
I've uploaded the testsoftware to the blank Board and all seems to be fine, heating bed and extruder(heat) are Working.
12V and 5V line are OK
VMot at all ports is ~12V
Then i've put one Stepper driver in (testet with new and old ones) , but nothing happens no sound (enable) or movement occors.
But in this Setup even with no Stepper Motor pluged in VMot pulls down to ~3,3 Volt and I don't think this should happend.
I've testet this on all stepper ports with differtent Stepper Driver, but nothings happens (U=12V but Vmot only 3,3V so its not the power supply)
So now I have a big problem i cant' solve.
I've uploaded the testsoftware to the blank Board and all seems to be fine, heating bed and extruder(heat) are Working.
12V and 5V line are OK
VMot at all ports is ~12V
Then i've put one Stepper driver in (testet with new and old ones) , but nothing happens no sound (enable) or movement occors.
But in this Setup even with no Stepper Motor pluged in VMot pulls down to ~3,3 Volt and I don't think this should happend.
I've testet this on all stepper ports with differtent Stepper Driver, but nothings happens (U=12V but Vmot only 3,3V so its not the power supply)