It’s about my lifting platform: Hofmann MTF 3000 Problem: The lifting platform made noises on the secondary side and stopped 7x when it was up and down. Once two years ago, it only stalled 3-5x. Something has probably worsened. In addition, it made noises on the secondary side above. What I have done so far: I have now changed the head bearing of the secondary b column. Now the lifting platform no longer makes noises. I also lubricated everything and checked for smooth operation. p. Also the adjustment when both lifting sleds are on 30cm and the thorn is in the control bar did not bring any improvement. Right where I turn the adjustment screw of the DC circuit, whether in or out only the stick point changes when blowing up, but also no improvement. It still stops when blowing up 7x. Troubleshooting: My guess it is somewhere because of the electrics of a component. Since everything is mechanically smooth like all bearings is not dry everything is lubricated wu rde. – Can this be attached to the microswitches in the primary column? Which of the three microswitches is responsible for what? – Can this also be due to a defective contactor or turning switch. What should I check now how?