im in the US, sorry. but I believe the one you want to jumper is P and G(the black and red wires that look damaged in the photo above. Those should go to the front panel toggle button for laser on/off. essentially the laser PSU will not fire unless P is connected to ground AND L is toggled by your controller( or k- to k+ from pressing the test fire button) Make sense?
@Domm434 Hi. I had a problem a few months ago and needed a new power supply. China tech guy asked me to connect the red and black using a small piece of wire to test the old supply. Hence they look as they do.
Are you saying I need to do that now for it to work ?
Just wondering what might have failed elsewhere for me to have to do it ? Was working ok up to yesterday.
Happy to do it if you can just confirm.
no you shouldn’t have to jumper those 2 wires to make it work, but it would eliminate them and the button from the loop to ensure that the problem doesn’t exist within that area. other than that I would try changing the water(using distilled water only) as it can become more conductive over time. if those don’t work then I would guess its an issue within the laser PSU itself.
@Frank_Farrant Does your machine have a water flow sensor?
Trace the black and red wire to see if it goes to a flow sensor or the panel. The flow sensor should be in series with this circuit.
Some newer machines come with a flow sensor that are notorious for “opening”.
@donkjr Hi Don
I had a message from China tech department saying I need a new water protector - they sent me the picture attached.
I have s new one coming over but do you know if I can buy anything local in the UK ?