I need some help and verification please.
I have a 50W ebay laser. It's the big blue one that's similar or the same as a SH-350.
I've been using it all weekend but tonight things went very VERY wrong. I was engraving a glass when all of a sudden the laser stopped engraving. About 5-10 sec later I heard the worst noise ever. I knew right off the bat the laser was arcing. I shut everything down with the emergency stop button. The FIRST thing I checked was the water pump and it's flowing perfectly fine. I have an active 1/4hp chiller that was working properly also maintaining the water at 20-21*C.
I've completely gone over the tube and I can't find a single break over the whole thing. I've checked the HV wire and it's completely fine also. Well I needed to verify that it was indeed arcing because I didn't actually see anything spark. After triple checking everything I powered everything up and I tested the laser using the pulse and sure enough the laser arced right under the HV side of the tube.
Now what do I do?
I can't find anything wrong with the laser tube. The ONLY thing I noticed was some condensation on the hoses because the water was too cold.
After raising the temp alittle bit and waiting for the condensation to completely evaporate I decided to do another test and now I get NOTHING from the laser. Nothing when I push the pulse button and nothing when I push the test button on the power supply.
Are there any more checks I can do?
Is the tube and power supply gone?
Thanks for listening.