Maybe you guys can help me diagnose what the problems are for my Laser machine. I bought in August 2018 directly from the company in China. It has a 100W Reci tube. But I did not really use it until this three months ago. I mainly cut 1/2" plywood and it has been okay cutting although the speed was slow at 9mm/sec. But more recently, it does not seem capable of cutting through the plywood anymore even through I lowered the speed to 3-4 mm/sec and up the power to 78%. If I cut a circle, it would cut through part of it and then skip the next part (pretty random). I have been using the same plywood from the very beginning and was able to cut them in February.
So far I noticed:
1. the included ammeter shows stable 24 to 25mA when cutting at 78% power.
2. the laser beam has no issue engraving at 100mm/sec at power 25%.
3. The CW-5200 water chiller seems working with temp at 19 to 22 degrees celsius.
4. the table is even and lenses are focused as before.
Anyone can help what could be the problem?
Great thanks.