I have a TwoTrees, TTS20 Pro 20W laser that is only 11 months old and I have a problem with it! The power output is like “0”. I really appreciate that I have received a lot of advice from members in this and some other forums however I still cannot get it to work. Is there anybody out there with a TwoTrees laser? I would very much like to have a chat with someone who has the same laser machine, because now I am starting to wonder, if maybe it is the Controller?
Thanks very much for any assistance that one might be able to provide.
If this occurred all of a sudden… then it usually indicates a hardware issue.
Unfortunately, these modules and controllers are generally not user serviceable.
The best suggestion I can make is to check that laser module is getting the proper supply current/voltage and that the pwm from the control board is operating correctly.
Both can be measured between a common ground and the V+ input. PWM can be checked by ground to pwm, the output will read a percentage of the devices output voltage. If it’s a 5V signal, you’d read 2.5V at 50% pwm… a 3.3V signal at 50% should be 1/2 of 3.3V or about 1.65V.
It’s unlikely a control board issue, the processors used today are very dependable. It’s more likely that the laser module is having an issue. Measuring the voltages will confirm it’s the controller or the laser module.
Make sense?
Hi Jack
Thanks for your input. At 79 years old, I am not a tech genius, but I try to find a computer guy who might do that for me. And also you think I should not go out and by a new controller?
Thanks
Franco
I started fixing computers in the 70’s… I always do my best to ensure what I’m changing out is the culprit. If you get a bad controller, then what? You’ve confused the elimination process…
We know the signals the laser must respond to and if those signals are ok, it’s not the control board…
Have you ever used a voltmeter? These are relatively simple as is checking the few points you need to check. I’m confident you can do it yourself if you want to.
Make sense?
Hi franzzo
Just changing the controller board is like changing the motor computer on a car when it may be a faulty sensor somewhere…
Things to check: Unplug the laser and check the lens (optics). It may need cleaning or replacement. While unplugged, fire the laser to check if power is even on the plug for the laser. Check the wires for a broken wire. It sometimes breaks at the connector to the laser head. When plugged back in, does the orange light on the laser head light up and fans run when the unit is turned on? Does the other light light up on the laser head when it is supposed to be fireing?
Hi Decappo
Thanks for your comment’s. Yes you are right. With all the time I spend checking al the settings over and over again, I was thinking it mauby is a faulty controller ore the laser diode. I will be checking the plugs and cables again. Orange and green light come on and the fan is also running!!!
Ok then when you are getting the green light when the laser “should” be firing, and turns off when it shouldn’t be firing, then the cables and controller is good. Then check out the laser optics to see if they need to be cleaned or is damaged. It may also be that if it was always run with 100% and not cleaned regularly, the laser itself may have burned out. I use a toothpick to block the fan and use the air compressor to blow out the cooling fans on the laser head itself at least once a week. It is amazing what builds up in there sometimes.