Brand new Mk3s Filament Sensor Stopped Working after a few days?
 
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john.o30
(@john-o30)
Active Member
Brand new Mk3s Filament Sensor Stopped Working after a few days?

Hi all,

I couldnt find a similar post regarding a new/Mk3s sensor so forgive me if this has already been asked about...

I paid close attention to taking care with the sensor chip when installing, and initially the sensor was working fine (autoload filament was, at least). Within a few prints/days the autoload feature stopped working (something I was living without before, anyway) so I began manually loading via Settings -> Move Axis.

Last night I decided to do the "short piece of filament test" to see if it would detect the run out and it didn't.

Can anyone direct me to a troubleshooting guide for the new MK3s sensors specifically? I would appreciate any help I can get!

(I also queried the facebook group about this and had several [~3-5] people say their sensors NEVER worked)

Posted : 13/03/2019 2:08 pm
RH_Dreambox
(@rh_dreambox)
Prominent Member
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?

Is your filament sensor activated?
See menu "Settings / Filament sensor / On" and "Settings / F.autoload / On"?

Bear MK3 with Bondtech extruder

Posted : 13/03/2019 5:53 pm
john.o30
(@john-o30)
Active Member
Topic starter answered:
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?

yeppers!

Posted : 13/03/2019 10:51 pm
john.o30
(@john-o30)
Active Member
Topic starter answered:
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?


Is your filament sensor activated?
See menu "Settings / Filament sensor / On" and "Settings / F.autoload / On"?

yes it is!

Posted : 13/03/2019 10:52 pm
K7ZPJ
(@k7zpj)
Reputable Member
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?


Hi all,

I couldnt find a similar post regarding a new/Mk3s sensor so forgive me if this has already been asked about...

I paid close attention to taking care with the sensor chip when installing, and initially the sensor was working fine (autoload filament was, at least). Within a few prints/days the autoload feature stopped working (something I was living without before, anyway) so I began manually loading via Settings -> Move Axis.

Last night I decided to do the "short piece of filament test" to see if it would detect the run out and it didn't.

Can anyone direct me to a troubleshooting guide for the new MK3s sensors specifically? I would appreciate any help I can get!

(I also queried the facebook group about this and had several [~3-5] people say their sensors NEVER worked)

Here is the link to the troubleshooting article for the new IR sensor: https://help.prusa3d.com/article/43mduc4zdn-filament-change-prompted-at-the-beginning-of-the-print

Posted : 13/03/2019 11:11 pm
neroes
(@neroes)
Eminent Member
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?

i found out that the lever had started going outside the sensor on mine, i unscrewed the sensor and readjusted the lever and poof it was working

Posted : 14/03/2019 12:21 am
john.o30
(@john-o30)
Active Member
Topic starter answered:
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?


i found out that the lever had started going outside the sensor on mine, i unscrewed the sensor and readjusted the lever and poof it was working


awesome haha ok so there is hope... did you follow a guide? if so, which one?

Posted : 14/03/2019 6:38 pm
john.o30
(@john-o30)
Active Member
Topic starter answered:
Re: Brand new Mk3s Filament Sensor Stopped Working after a few days?

SOLVED! Thanks to the guide @bruce.p4 posted. I took everything out to ensure the mechanism was working properly, but as soon as I put the extruder motor back in place the sensor arm kept getting stuck in the "open" position (triggering the sensor = "1"). It took some tweaking but I finally figured out that by loosening the sensor chip (from the top panel) a bit actually fixed the problem! Now the sensor arm is moving freely and the sensor is working great again!



Hi all,

I couldnt find a similar post regarding a new/Mk3s sensor so forgive me if this has already been asked about...

I paid close attention to taking care with the sensor chip when installing, and initially the sensor was working fine (autoload filament was, at least). Within a few prints/days the autoload feature stopped working (something I was living without before, anyway) so I began manually loading via Settings -> Move Axis.

Last night I decided to do the "short piece of filament test" to see if it would detect the run out and it didn't.

Can anyone direct me to a troubleshooting guide for the new MK3s sensors specifically? I would appreciate any help I can get!

(I also queried the facebook group about this and had several [~3-5] people say their sensors NEVER worked)

Here is the link to the troubleshooting article for the new IR sensor: https://help.prusa3d.com/article/43mduc4zdn-filament-change-prompted-at-the-beginning-of-the-print

Posted : 14/03/2019 8:03 pm
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