My. XMON would mute itself and stop passing audio intermittently..the unit would remain powered on.
Impending D-Command power supply failures often show up as intermittent behavior rather than just not powering up.
If you are simply losing connection with PT I would try troubleshooting the Ethernet connection first in hopes of a cheaper fix…
These folks have been very helpful with troubleshooting advise and also have lots of parts for D-Commands like power supplies, faders, LEDs etc
https://advancedmusical.com/
__________________
Will Russell
Electric Wilburland Studio
https://linktr.ee/wilburland
M1MAX Mac Studio OS 14.4.1, PT2024.3, HDX, S1/Dock
M1 PRO MacBook Pro OS 14.4.1, PT2024.3, BabyFacePro FS