Heated Bed temperature

K8200 3D Printer K8200 - Assembly and user manual
1

During the powerup i become an error: The temperature of the bed is 205.7°C. (MAXTEMP triggered)
Bed dismounted, resistence mesaured:

  1. with connector plugged in the control the resistence is polarized 0kOhm / -38 KOhm (Diode ?)
  2. with connector unplugged 99 kOhm

Inverted ntc extruder with ntc bed:

Now the indicated temperature of the bed is ok, the other no

I think a problem in the control.

Thanks

2

For my opinion, your main board is defect. I have had the same problem

Ask to velleman to receive a new one, but you need to send it before, wait message from velleman person

3

Please respond to my question. Must sent the controllor for repair / substitute ?

4

I think it depend of the problem type, But I have had the same problem and I received a new one