I bought a 150w Chinese tube 2 years ago, and the tube needed replacement recently.
So I bought a new 130w tube online, received it, but since the install, it gave me lots of issues,
Initially, it seemed to work, except it would start cutting, but would "reduce" power in a few seconds, and not cut through.
I would reduce the speed, but the same would happen.

Then I could hear sparks coming off the machine, the laser would stop working.
Upon inspection the electric wire would be burned off.
I fixed the proble, but the same just keeps happening.

Any suggestions? Please