Dynamic Calibration flow control not working

[user_3000080917]

I have been printing a large format flat print for a couple of months now. Basic Black and White BamBu filaments both in PLA while in development and PETG for production. All printed on Textured PEI plates. Early prints went as expected but lately [this last 2 weeks since the last upgrade] the Flow dynamic calibration control has lost its mind! Suddenly in mid spools the surface has gone from smooth to pine trees and Valleys.

Is there a maintenance option to remedy this? I have gotten a message about the lidar lease needing cleaning and cleaned it, to no avail.
Additional evidence of poop gone stringy and mixed in color. Not tight little balls anymore.

[JonRaymond]

@user_3000080917

Additional evidence of poop gone stringy and mixed in color. Not tight little balls anymore.

Make sure your poop door and rear cover is in good shape.

Print Head Rear Cover

Lasr week my printer started to have unusual poops. Long and stringy, hanging up in the poop chute. Triggering the high level alarm. The next day I noticed the rear cover was breaking apart. So when the print head went to perform a perfect poop it wasn’t able to close the poop chute door. Thus the long and stringy poops. Here is a couple of pics. [20231106_165649] [20231106_153353] [20231106_165700] It took 4 days to get parts to the house. Good job Bambu Lab USA! It took about 10 minute…

[user_3000080917]

Interesting, but not the problem. Back is fine. However the dynamic flow control problem is still a problem. I am beginning to think it is a tired AMS. as long as it prints in one color it is fine, but when it starts swapping between colors chaos ensues.

[user_3000080917]

I am beginning to think it is a tired AMS. As long as it prints in one color it is fine, but when it starts swapping between colors chaos ensues.