Laser is burning when I use the focus (fire button) and it engraving black (power is not changing)

No errors in the console window.

For more infos from the console windows, I did several steps.

_Launch Lightburn.
_Draw a square inside the working zone
_I’ve moved the laser on the center of the working zone
_Push the “Fire” button for focus my laser (0.10% power).

Then my laser started to burn the wood at max power. I was forced to stop the machine manually (via the reset button), impossible to stop the laser via Lightburn (fire button and the stop button), so it can be very dangerous. The firmware is updated by the way.

So here is the info from this “project”:

En attende de connexion…

En attende de connexion…

ok

[AUTHOR: ORTUR]

[MODEL: Ortur Laser Master 2]

[OLF: 140]

[DATE:17:23:54 - Jan 4 2021]

[VER:1.1h.20190903:]

[OPT:VNZHI,99,254]

Target buffer size found

ok

Autoguidage

ok

Démarrage de flux

[MSG:Pgm End]

Flux terminé en 0 :04

ok

ok

ok

ok

ok

ok

ok

Ortur Laser Master 2 Ready!

OLF 140.

Grbl 1.1h [’$’ for help]

ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok ok [AUTHOR: ORTUR] [MODEL: Ortur Laser Master 2] [OLF: 140] [DATE:17:23:54 - Jan 4 2021] [VER:1.1h.20190903:] [OPT:VNZHI,99,254] Target buffer size found ok Autoguidage ok

$0=2.000

$1=25

$2=0

$3=0

$4=0

$5=0

$6=0

$10=3

$11=0.050

$12=0.002

$13=0

$20=1

$21=1

$22=1

$23=7

$24=600.000

$25=3000.000

$26=100

$27=3.000

$30=1000

$31=0

$32=1

$33=250.000

$50=0

$100=80.000

$101=80.000

$102=80.000

$110=9000.000

$111=9000.000

$112=1200.000

$120=2200.000

$121=1800.000

$122=2500.000

$130=400.000

$131=430.000

$132=1.000

ok

THanks about the grounding info. It can be a solution for the fact that my laser has stop a couple of times when engraving. I think I have found the “solution”: Laser stuck on 100% - #9 by DougL

Problem from the mother board :confused: