[g.weike laser]

Hi
when you power is weak,how about ammeter? it change or not?
from our experience,this kind of problem always happen on laser tube quality problem

[jouellet]

there is no ammeter installed on my machine.

What type of ammeter are you talking about, where in the circuit, should I install it ?

[herby08]

hi there
a analog mA meter with max 50mA should be installed between the negative wire ( usually black or blue ) what comes from the side where the beam comes out the tube. just cut this wire somewhere where it is inside the the electronic compartment and extend this for the mA meter one piece goes to one side the other to the other side of the meter, that's it.
greetings
waltfl