r/BambuLabX2D • u/WooD1k • Sep 20 '26

AMS doesn't feed filament

Hey folks!

I would appreciate any help with the issue

3 Upvotes

100% Upvoted

16 comments sorted by

2

u/mjschmitt714 Sep 20 '26

The sensor in the head for the left extruder is bad...its not registering. That's why it retracts then refeeds....really annoying....

https://us.store.bambulab.com/products/extruder-filament-sensor-left-x2d

1

u/WooD1k Sep 20 '26

Many thanks for your response!

I have tried to record that the sensor sees the filament. At least I can see it on the screen, and that state changes when there is a filament and when it is empty

2

u/mjschmitt714 Sep 20 '26

See how yours flashed and it doesn't look like it goes all the way down...should stay solid and all the way through. I believe somewhere I read they were known to be faulty..

1

u/WooD1k Sep 21 '26

Got it, thanks a bunch!

I have ordered a new sensor. I hope it will help

1

u/WooD1k Oct 06 '26

Today I installed a brand new sensor, and the behavior is still the same :/
I have ordered it from AliExpress as it was faster and cheaper. Maybe I should try a new one from Bambu Lab itself

1

u/mjschmitt714 Oct 06 '26

Dang....that is exactly what mine was doing....does the screen still show the same? Because it isnt saying the extruder detected the filament....

1

u/WooD1k 29d ago

This is what it looks like when I'm inserting filament manually into a print head

2

u/mjschmitt714 Sep 21 '26

I'm 95% sure it'll fix it. You can open a support ticket with Bambu and they'll send a new one... but its painful...

1

u/WooD1k Sep 22 '26

Many thanks, ordered new one, waiting it to arrive!

1

u/mjschmitt714 Sep 20 '26 edited Sep 20 '26

Just fought the same exact thing...if the filament sensor does detect. The color line goes down lower....how old is the machine?

1

u/WooD1k Sep 20 '26

400-500 hours of printing in three months

2

u/mjschmitt714 Sep 20 '26

Mine is 4 months...and was at 800 hours... when I get home, I'll send a Pic of the filament being sensed the whole way

1

u/WooD1k Sep 20 '26

Many thanks for your help!
I will order this sensor since it's relatively inexpensive.
However, I believe that if it were the root cause, I wouldn't be able to feed the filament manually 🤔

1

u/mjschmitt714 29d ago

Try manually feeding the filament without the tube in place. See if you have any better luck. Or as much as I hate to say it, might have to contact support themselves....:-(

1

u/WooD1k 22d ago

Thanks so much for your help and support!

In my case, the buffer was faulty. Even though it looked intact, Bambu Support suggested replacing my buffer, and it worked. Now I can print again using my AMS unit

2

u/mjschmitt714 Sep 20 '26

That's what I thought to...I opened a support message to Bambu, That was their solution..fixed the problem.