Laser will not turn on

[Dave Vigness]

Your water protect will be two small wires. My original was inside the cabinet above where the water in. I had to pull the bulkhead plate to got to mine. Most will have them as a pair like a line cord, but with all Chinese machines, there is no common denominator.

You will generally only use 5 of 6 on that connector, as the H and L are mutually exclusive. P is most likely your water Protect, and G your ground. You may well have two or more wires in the Ground connections

[Gene Uselman]

Power Supplies and a lot of other laser parts are made by just a few major mfgrs and relabeled by everyone else. I often google what I know about a part and then click Images and often find a match and then look for a manual for that item.

[Robert Zielke]

I traced the wires back to the controller [RDC6442S-B(EC)]

On the PS the top two pins are connected by a red wire. I assume this is the WP connected to ground.

The black wire is the next pin on the PS and it is connected to the controller CN5 labeled L-ON1. I have no idea what that is.

The blue wire is the next pin on the PS and is connected to the controller CN5 labeled ground.

The green wire is the next pin on the PS and it is connected to the controller CN5 labeled LPWM1 I assume that this for the Pulse Width Modulation.

The last pin is not connected to anything. I assume this is the 5V .

I will be getting my power supply next week. I hope there is documentation with it.

[Gene Uselman]

I have currently on one of my machines a 6442 and on CN5 [laser one] the connections are 1. ground to chiller ; 2. L-On1- TL [low trigger]; 3. LPWN1 to IN on PS; 4. WP1 to chiller; 5. L-AN1 - no connection.

So- HV PS connections to the 6442 are 5v- NC; IN- to LPWN1; Grd to Grd; TL to L-On1

[Robert Zielke]

I replaced the PS and the laser is working. I still have to reset the last mirror because the impact shifted it at least 15 Degrees from vertical.

I accidentally purchased the exact model of PS that I had in the machine. I only found the model number of the old PS as I was removing it. So all I had to was plug the connectors into the new PS and attach the high voltage line to the laser tube.

I want to thank you for all your help. I know nothing about electronics and I did not think it would be easy.

I found this youtube video that was very helpful. It showed how to wire laser tube and the power supply. It also showed how to splice the High Voltage wires and insulate them properly. I needed that because the shrink type insulation is only rated to 600 Vollts and the laser voltage in much higher.

https://www.youtube.com/watch?v=hN2KKdNGzGs

[Gene Uselman]

That is Marco from LightObject- he has helped me for 5+ years, a good man and very knowledgeable.