OK here's some background of the problem:
All retracts on the extruder produce a screeching noise. The extruder extrudes normally all other times.
Any fast move on the Z-axis also produces a screeching noise and the Z-axis will move normally at all other times.
This appears to happen regardless of any printing state whether the heaters are on or not it will still occur it even happens during the ABL process.
Specifications of the printer:
- Mainboard: MKS Gen L V2
- Drivers: TMC2209 UART
- Stepper motors: Stepperonline 17HS15-1504S 1.8 deg 1.5A
- Pulleys: GT2 16T
- Leadscrew: 2 mm pitch T8
- Hotend: E3D V6
OK so basically I performed an upgrade of my stepper drivers as well as the leadscrew and pulleys on my 3D printer which was originally a Tevo tornado and at the start of every print I would experience a loud screeching noise coming from the Z-axis and I originally identified it to be a single line in my G-code that would only trigger the screech if it was preceded by another line and by commenting out the first line I was able to start printing
Lines in question:
G1 X3 Y1 Z15 F9000 ; Move safe Z height to shear strings G0 X1 Y1 Z0.2 F9000 ; Move in 1mm from edge and up [z] 0.2mm
However, while I was able to start printing, I soon found out that the extruder was doing the same thing with every retract it would create a loud screech and the filament wouldn't be retracted this caused heavy stringing as well as poor layer adhesion resulting in prints failing. I figured the problem was with the version of Marlin I was using so I attempted to use the latest bug fix. However, I was still experiencing the same problems. I attempted to see if the stepper current was the problem and after identifying that the stepper current was not the cause of the problem, I figured I needed to replace the stepper motors and after replacing the stepper motors the problem still remained. I figured the problem must be with Marlin so I attempted to use Klipper. However, I am still experiencing the same and now I can't even complete a mesh bed leveling as the movements that Klipper uses are triggering the loud screeching and causing the steppers to freeze up.
I am unsure as to what could be causing this as I think I've checked everything that could be causing it so I'm not quite sure how to proceed I've also made a video that should show the problem in action. So I guess I'm wondering what's my next troubleshooting step?
I have tried changing the drivers back to TMC2208s there have been no changes on both Klipper and Marlin.
I tried switching to an MKS Gen L V2.1 in case it was a mainboard problem, still experiencing problems.
The only other thing I think I can try is running the TMC2209s in standalone mode