Power problems with Snapmaker 2

[dnaworks]

Hi folks - I have an odd error with my SM2/350f. I have an enclosure, as well as the dual extrusion head. I recently took my 'maker offline to replace the rails, add the quick change kit, and install the stop button. When I reconnected it, when I have the enclosure cable plugged into addon 3 (2 up from power) on the snapmaker cable hub, the heartbeat does not come on nor does the front ‘phone’ boot up. When I disconnect the cable, both functions immediately start.

Has anyone encountered this? Is my power supply (the new one) misbehaving? I have the latest firmware - installed so that I can use the dual extruder - so unless there’s a bug there, I doubt that it’s due to that. Anyone have any thoughts?

Is there any way to purchase a new power hub? It’s currently unusable and a hunk of metal on my desk rn

[xchrisd]

Does the issue appear if you disconnect the stop switch before starting?

Your dual extruder did already work in the past?-Did you ever printed?

I think this is a firmware issue. I remember a misbehaviour years ago where some specific module updates had to be done.
Maybe only connect one new module at once at startup.

[dnaworks]

Holy smokes. That worked and allowed me to update the firmware. This has been broken for two years. Thank you very, VERY much for the advice

[xchrisd]

Glad it helped