I have a Morntech MT-L570 with a 60watt laser tube that I am replacing. I have connected everything but the laser tube will not fire. The ammeter doesn't register anything when I run a cut sequence. I had a spare power supply so also changed that out. Still nothing. When I disconnect the longer green connector from the power supply and hit the test button I get nothing. Please let me know if I've exhausted everything to try. I've read through other posts similar to my problem and think it must be a bad tube. I can still return the laser tube but want to be certain that is the problem. Thanks in advance.

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