I got a 1w guardian series 445nm laser from sanwu. I had it running at 15 on and 45 off. It worked great for about 5 min. I turned it on and it was bright for about 2 seconds then it went dim.like less then 1 mw.there’s no way I burnt it out it wasn’t even warm. I emailed sanwu but is there anything else I can do in terms of troubleshooting?