I am experiencing a persistent safety fault with my Creality Falcon 2 Pro laser engraver.
Symptoms:
The machine powers on normally
It starts continuous, identical beeping
The reset button does not respond
The machine cannot be used
Checks already performed:
Enclosure (lid) safety sensor tested and confirmed working
Emergency stop fully tested (pressed, released, rotated)
Laser module removed and reinstalled
Machine tested without USB connection or software
Full power reset performed (unplugged from mains for several minutes)
Machine fully cooled down, lens cleaned
The beeping remains identical and continuous, regardless of the enclosure position, emergency stop state, or laser module presence.
Based on this behavior, it appears to be a permanent safety fault at controller or interlock level rather than a user-adjustable issue.
Please advise on the next steps for diagnosis, repair, or RMA.