filament not feeding on print

[jason.fletcher@locks4vans.co.uk]

my Up box plus has just developed a strange fault after 2 years fault, filament extrudes ok and extracts ok when loading a new roll of filament, but after doing a manual level test to make sure all is ok, once the print starts the drive gear is just clicks like there is a jam and no filament is drawn in, i stop the print immediately and extrude some filament manually it comes out fine, so no blockage. i have changed the head with a new one today ( New ABS variant ) set it up and the same thing happens, extrudes manually but not during a print! ive had no issues with this printer up to now, all i can think it is is something wrong with the latest software update?

HELP!

[Tiertime_Ocean]

Dear Customer,

Before update the UP Studio and it's working fine?
If it's working fine and please use old version UP Studio.
Maybe V2.6.20.627 not compatible very well with your printer.
Previous UP Studio download link:
https://www.tiertime.com/downloads/software-archive/
Please contact us if you have any problems.
Thanks.

[WillH]

Did this solve your problem?
I have been having similar problems, and short of replacing the whole extruder assembly I cant think of a solution.

[WillH]

I tried multiple versions of the up software with no success.

I have had success on multiple prints by bypassing the filament feed tube. I think it was causing too much friction.
I have ordered a replacement tube which hopefully solve the problem.

Does anyone have instruction son how to replace the filament tube