Hello all. I'm looking for some support on assembly of my Proforge 2S. I have everything together and sucessfully flashed the marlin firmware to the control board. the next step was to power up the machine with the usb plug still connected (touchscreen still unplugged) and the moment I flipped the switch my PC (thankfully an old/spare one) got fried...
So on next attempt after double checking all wiring (with another old PC) I powered on the printer first (had proper fan spinning) plugged the blue USB cable to the PC first, and as I approached the USB port on the printer the outer grounding shell of the cable and the USB socket sparked so I did NOT continue plugging in the USB cable. I did a continuity test on the USB cable pins from end to end and all is well there. Not sure what to test next? Controller still seems to work as I have proper fan activity.
Thanks for the update and support.
Is there any way I can test the 4 driver boards on the controller board to see if they are ok? (two red and two white) I have the dual extruder upgrade as well but I only built the standard hot end so far so the 5th driver chip wasn't installed.
It sounds like it was very likely a short along the LED strip, we're going to be looking into this more closely and if need be put out an update telling users not to use install it. I've pm'd you about moving forward as it does sound like the short forced the extra voltage down the USB port and fried the driver chip in the process.
OK so I went thru the install guide again and verified all of my wiring is connected to the correct locations. I unmounted the control board and checked behind it for any shorts and found none. I had a thought, and decided to disconnect the LED lights, since they were the only item not spelled out in the manual that I was using. I did verify that Red was to positive and Black was to negative (they did light up on my first run but made sure to double check). With the lights disconnected, there is no more sparking on the USB port and I successfully connected to a PC without blowing it up!! I'm guessing the lights copper contacts every 10cm or so are at risk of touching the frame?? Perhaps I was unlucky enough to have copper contacts at a corner point of the to support that kinked and touched the frame?
After removing the lights, the problem is now that I think the controller board is dead. I get a red light on D7 immediately upon power on. Computer says USB device is unrecognized (with drivers loaded). Pressing the button on the controller board give a blue blinking light right below the red one and then a quick single blue blink of D12.
Also my blue USB cable and black USB Male to Female from the controller to the back base have a little burn spot on them, so for this testing I have both tried the included cables as well as a brand new 3ft USB A-B directly between the main board and the PC to make sure there was no USB cable issue adding a second level of issues to the mix.
What should I do/try next?
Is my Lighting issue a fluke or is it a real problem?
Thanks in advance.
will do. I will report back on my findings 18-24hrs from now. I am doing my build at my office which I am about to leave for the day. Thank you for the offer to replace the bad parts!
First double check that all of the cables connecting to the power supply are going to the right places, and nothing on the terminals is causing a short. Check that the IEC switch is wired correctly (matching the image in stage 1 of the build manual.
Check for shorts underneath the control board also as it sounds like current is being sent through the USB port. Might also be a short along the mounting cable and may be worth doing a continuity test along it also. More than ready to send out a replacement board/cable if you find one of them to be faulty. I would recommend proceeding with caution and using a tester screwdriver or multimeter if you have either to check for current on the USB port before plugging anything in.