Glowforge Plus MB problem

Hi, I have two identical Glowforge Plus. One of the MBs has a problem and I have tried swapping the MB between the two units. The error stays with that defective MB and the GF will be stuck on “Scanning” with a red light on in both GFs. The other MB works in both GFs with no error.
I have tried to analyze the logs and find the following error on that bad MB. Please remember, that shows up in both the units, when I have the bad MB.

2025-07-02_08:05:36.08290 30922 ERROR: hw: laser supply current of 962 exceeds maximum of 12 (/usr/src/debug/glowforge-app-production/0.1-gitAUTOINC+f9eb63c036-r0/git/src/hw_task_errors.cpp:308)
2025-07-02_08:05:36.08293 30922 INFO: hw: error flag set: fault:hv_current_alert:set (53)
2025-07-02_08:05:36.08294 30922 DEBUG: hw: writing to /sys/glowforge/cnc/stop
2025-07-02_08:05:36.08295 30922 DEBUG: hw: writing to /sys/glowforge/cnc/disable
2025-07-02_08:05:36.08909 30923 DEBUG: hw: writing 1 to /sys/glowforge/cnc/laser_latch
2025-07-02_08:05:36.08912 30923 INFO: hw: clearing pulse data
2025-07-02_08:05:36.08913 30924 DEBUG: HWFSM: idle => unusable
2025-07-02_08:05:36.37570 31215 INFO: 8000 ms
2025-07-02_08:05:36.38062 31218 DEBUG: hw: driver state is now ‘disabled’, progress=0/0, pos=(1908,378,0)
2025-07-02_08:05:36.38065 31218 INFO: hw: error flag set: fault:cnc_disabled:set (44)

Has anyone ever seen this ?
According to the HW reenginieering document Pin 1 of the power supply connector seems to have this signal: HV Current TP_B2F

I measured the voltage on the good MB to be 0V (during the normal start phase) and 3.3V on the bad MB. So I just cut connection from pin 1 and grounded that pin.
Now the GF works.

ok, red light, WHERE is the red light?

Jonathan

Sorry, I don’t understand.
You mean red light on the button ? As long as the problem existed, the button started glowing red as soon as the GF reached “scanning” state. Now with the fix there is not red light anymore and I can print.

AHH very nice, yea, I didn’t know if it was the red dot (focus) from the laserhead, or the magic button.. why I was asking.

Jonathan