Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Lost +12v on left pin of hotend heater terminal on board.
#1
So, I had heater decoupled when I woke up this morning to check on an overnight print and I had the classic heater decoupled problem. I replaced the crappy connector with some solder and heatshrink, but still have the same thing going on. Several hours, and LOTS of probing with a volt meter, I mis-diagnosed the problem as a break in the wire (turned out I had a bad probe on my VM). A few more hours, after upgrading heater wiring to 18ga stranded copper, I find that I have 10v at pin 1 instead of the 12v and no heat. I checked the right pin with heater on and I found that the mosfet is working, so I just re-routed the positive to the positive bed wire terminal. Now it is printing again, and heating MUCH faster than before, but I want to know what killed my 12v source for the heater. Anyone have this problem before?
Reply
#2
some of the versions of PCB have a resistor fuse right near the heater connector on the pcb. maybe that fuse is open or damaged.

Kieth
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)