Hi,
I have a an GWEIKE LC 1290 dual head laser. One tube is 60W and the other is 150W. I was running a job with the 150W tube on 100% power cutting acrylic when the laser suddenly stopped firing about half way through the job. The head continued to move and process the job but the laser wasn't firing. The Ammeter display on the front of the machine doesn't read any amps.
Now both power supplies don't have any lights on... There are three lights: green for the signal from the control board, yellow for the water supply and the safety switches, and red for the high voltage coming in.
So the control board will still send and receive jobs. The machine starts up and finds home, I can jog it around and everything works. I can send jobs and it will go around the lines as it should. I tested the signal going from the board to the power supply and it is getting a signal on both power supplies. Also there is 120V coming into each power supply. I then tested the signal coming from the water supply, that and it seems to be working, and I also moved the magnet around for the safety switch with no results. I went through the videos that GWEIKE has here: problem test-Video-Laser engraving machine|Laser cutting machine|CNC router-G.Weike Laser
All the signals seem to be the same as they are showing. Except there is no lights on the power supply. The fans on the power supply aren't even working.
I thought there must be something wrong with the power supplies, although it doesn't seem likely that both power supplies would be damaged when only one was cutting. I ordered two new power supplies, a 60W and a 150W. I replaced both of them and it did not fix the problem. I also ordered a new control board thinking it was the last thing that could possibly cause any of this. It to did not fix the problem either.
The only thing I can think of is that the magnetic switch isn't working or the water supply switch is somehow not working. Or somehow a little wire rattled loose during the job. I looked around and didn't see any loose wires though, but I'm not an expert or an electrician. I have ordered another magnetic switch but i don't think that's the problem. I don't really know what to troubleshoot next. Any help or ideas would be great. Below are some images of my setup.
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