# GRBL Laser not burning

Hi there, I am total noob when it comes to laser and laser engraving in general, but i have been surfing the web for a solution to my problem for 2-3 days now! I have this china laser (as you can see from the picture attached to this post) My problem is this:
When i test the laser with a letter B (Also screen shot attached) The job is executing and the laser is on but it does not burn ANYTHING here is the settings from the console :
I did change alot of settings while searching the forums, but nothing
Appreciate anyones help in helping me solving this problem!
Thank you!!

\$\$
\$0=232
\$1=25
\$2=0
\$3=0
\$4=0
\$5=0
\$6=0
\$10=0
\$11=0.010
\$12=0.002
\$13=0
\$20=0
\$21=0
\$22=0
\$23=0
\$24=25.000
\$25=500.000
\$26=250
\$27=1.000
\$30=1000
\$31=1000
\$32=1
\$100=250.000
\$101=250.000
\$102=250.000
\$110=6000.000
\$111=6000.000
\$112=500.000
\$120=400.000
\$121=400.000
\$122=10.000
\$130=38.000
\$131=38.000
\$132=200.000

The \$31 value is the problem here - This value is the number that the controller uses to mean â€ślaser offâ€ť, and since itâ€™s currently set to the same as the \$30 value, which is the one used to mean â€śfull powerâ€ť, youâ€™ve given the controller an impossible choice.

Set \$31=0 and that should solve it.

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Thank you for you help!

I changed the vaule of \$31 to be \$31=0

But unfortunately nothing burns it looks like everything worksâ€¦ but no burn at all from the laser

Thank you !

You might need to power cycle the laser after that. When you say â€śno burnâ€ť do you mean it doesnâ€™t light up at all, or just that it doesnâ€™t burn things?

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I did power cycle the laser. They laser appears to be runningâ€¦ blue flashing light coming out when it runs, But it does not burn anything on the paper. Strange thing is when i put lets say laser power 20% and press fire it does burn something on the paper thoughtâ€¦ I know it is just meant to adjust laser focus but i just wanted to see if it burns at allâ€¦ and it does when i press fire buttonâ€¦ but nothing does burn when i run a codeâ€¦ what else can i try ?

Thank you !

You said, â€śthe paperâ€ť - is it white? Youâ€™re using a visible light diode, and white paper reflects most visible light. You havenâ€™t shown what power / speed settings youâ€™re trying to use, so itâ€™s possible youâ€™re simply trying to go too fast.

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