7i76e output high at power on? Blown up?

I have a 7i76e and a generally working linuxcnc (2.8) config

My control panel has a bunch of switches and 3 led lights (RGY)

When I power on my control cabinet including applying power to the 7i76e two outputs are high and the lights come on

When I init linuxcnc they remain high even though Halshow shows those outputs as low - have I blown some output element?

Potentially related - while debugging my configs and control one of my stepgens stopped working - I lifted the (once working) stepgen header (from TB2 7-12) and moved it to TB2 (19-24) with no other changes and my Y-axis began working again

halp?

Yes, an stuck-on field output indicates that the driver has been damaged

Things that can damage a field output:

1. Switching the DC field power (switching should be done in the field power AC side)
2. Driving a large inductive load (> 60 mA) without a flyback diode
Field outputs are short circuit protected so a short to ground will not hurt them

A bad Step/dir output usually means that they have been inadvertently
connected to a voltage outside the 0 to 5V range (often 12 or 24 V)

Thanks for the quick response.

The Stepgen isssuebwas almost certainly a bad wiring condition. My y-stepper showed a fault early on, I corrected the wiring but the damage must have been done.

WRT the outputs I’m pretty sure these LEDs are 20ma. Can you clarify what you mean by saying switching in the DC field power? The two outputs that are bad do have some toggle logic around pause/step/resume. Would that type of switching cause this?

I have my 24v power coming into the Mesa board and it comes on with the main contractor.

The 12/24V DC power to the 7I76E field power terminal should be
switched on the AC side of the supply not at the 7I76E