1

Hi!

First of all, sorry for my bad English. Obviously I am not native English speaker but I hope the message is transmitted.

I have two issues with my Wanhao Duplicator i3 Plus printer:

  1. X-Axis end stop is triggered all the time no matter if it is pushed down or not. As you know it is located in the left side of x-axis. The x-axis does not go home as told but moved a few millimeters to right. I can manually force the print head to move left but it will crash to the carriage eventually. I solved the status of end stops by using M119 command and other switches worked as they should. It did not change the situation when I pushed the switch by finger.

  2. Extruder temperature is stuck at 210 °C. When I turn the printer on the thermistor claim the temperature to be that 210 C but I can clearly tell the heater block is not heated at all. If I set the temperature to for example 100 °C the temperature won’t decrease. If I set it greater than 210 the heater will start to heat the temperature. After a while the user interface says there is error in temperature and the heater is turned of.
    Things I have already done:

  • I checked all the wirings and connections in case of short circuit or bad connection but no luck there.
  • I suspected that the firmware was spoiled someway so I updated both firmwares (motherboard and LCD screen) but no changes to better
  • Switched the end stop switches with y-axis but the same symptoms occurred.
  • Thermistor changed with no influence.
  • Mother board changed couple of months ago. After that the printer worked fine.
  • Do you have any suggestions what to try next? If something was not clear I will try to explain it more precisely.

I will give more information and do tests if you have any ideas. Thanks in advance!

2

Hi! It sounds like you might have a short on the board. If it’s still under warrant, make sure to contact them before opening up the mainboard enclosure, as doing so may void the warranty.

If it’s out of warranty, some of the information in this video may help, I believe he explores what happens when a wire shore occurs.

Good luck!