Purchased an A1 printer with the AMS back in January. After 9 months of going back and forth with Bambu Labs I still can not make a print. I have spent 20 hours working on this stupid machine and no change. Bambu labs is having me do the same trouble shooting over and over. Is it possible to talk to a live technician? Obviously their current system is not working. I can’t begin to tell you how angry I am at Bambu labs tech service. 0 Prints after 9 months…send me a replacement machine already. I’ll gladly send this one back.
What are the symptoms? What have you already tried?
Are you starting new tickets or continuing an existing one?
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I am trying to keep the same ticket open so they know its the same problem that I’ve had since I’ve owned the printer.
I can’t print because before it gets started I get a “Pull Back Filament” error code. I’ve taken the entire printer head apart more times than I can count. Seriously 20 times. So many times that my tubes holders now have issues because I’ve inserted and released so many times. My cover on my print head no longer stays on because I’ve taken it off so many times. . I’ve tried every basic trouble shooting menu option they have suggested along with everything I can find on the internet.
I’ve replaced the TH Board and the filament sensor. Every time I replace one of these, and tell them it didn’t help, I have to start back at step one. I make the correction and then wait for their response.
They said they were going to elevate this issue so I could get it resolved and of course it certainly doesn’t appear they did that. Also, they said, due to your trouble, we will send you a roll of filament…of course they didn’t do that either.
My last response to the ticket was on September 25 and I have not received a reply other than the automatic response that said sorry for the delay in response.
You don’t necessarily have to keep the same ticket open. It helps but really you have a ticket number you can reference in future tickets. Out of curiosity what do the PTFE tubes look like running from the AMS to the print head. Has the 4 way been replaced?
I ask because it’s common for worn tubes or ones with too steep bends to cause pullback errors. Gentle(ish) bends are preferred.
I’m sure you checked but be certain there are no issues with the actual AMS. Motors and too much friction in pulling can cause the motors to throw an error too
Yes, I have the same ticket number. The tubes running from the AMS to the print head should be fine. We’ve had them in every configuration imaginable and no change. The 4-way has not been changed, but it’s been jacked with so much that it wobbles much more than it did when we got it. I have no idea if there are issues with the AMS but I can say that the error occurs reguardless of which roll we use on the AMS. Yes, I can print the boat without the AMS…seems to me that the AMS is the issues but I keep pointing that out to Bambu labs and they keep having me check green dots on displays, sensors, and boards in the A1.
It’s important this is locked in, there are prints on MW that are designed to keep this straight up. If the holes aren’t aligned that will cause the exact error you are having.
Should be isn’t “is”. Configuration isn’t important, it’s the curves and condition. I’m guessing these are new PTFE tubes so won’t go on about condition. While the tubes are slick as snot, if the degree which the tube is bent is too high, it will cause drag and then the error you are getting.
This should be narrowing it down then. Do you get the error when you just feed a spool from the spool holder? If so that eliminates the AMS.
They are doing their job. You have to help them. First eliminate or determine if the AMS is the issue by not using it to feed filament. If you get the error without the AMS then It’s with the printer. If they haven’t sent you a filament sensor or filament hub, request one of each. I would have them on hand in the future.
For your hub wiggling:
An example of another:
If using a spool doesn’t throw the issue then you know it’s the AMS and you can confidently relay that to BL. They will listen if you show it’s repeatable, take video of it happening, document the wiki steps you’ve followed. This applies to both methods.
The key will be to isolate between the AMS and the printer, to figure where exactly the error is thrown.
Correct, it does not give the code when feeding from the spool holder. I have relayed this multiple times to Bambu labs. They may be doing their jobs but this was not working out of the box. After 9 months…they arn’t doing their job. I’ve spent hours upon hours working on this. That should not be part of the deal when buying a new product. You may have knowledge about how these things work and how to work on them. I do not. I was simply trying to help my son purchase a printer so he could print some of the items he was creating at school. At this point. he is no longer in the class and has completely lost interest because we can’t print. This is just wrong, lousy, poor. It makes me furious. Give me a refund .
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Trying to figure out why they haven’t moved forward. They’ve been on holiday for the past couple of days. At least that may explain why you haven’t heard back, but I agree it doesn’t explain the rest. Especially starting from square one after parts swap.
You may have done this and it not help. This is how I’ve handled tickets and it seems to work. Again, you may have done this, however I’ll share just incase, and for others who may try.
When I open a ticket it’s after the wiki troubleshooting. Simply because experience has told me they’re going to point there first. I then take pics (if possible) while I’m doing at least one step in the routine. I also take a vid or pic of the problem happening.
I then open the ticket and painstakingly list all the wiki troubleshooting and include the pictures I’ve taken. I remind them several times in the ticket that “this” is the problem and I’ve uploaded pics. “That” is what I’ve done in the wiki with pics so please don’t ask me to do them again. I emphasize that.
Now, in MY case, usually ends in 1-3 replies. I’ve had one that floored me when the reply was “sending new xxx”. Rare.
I don’t think you’ve done anything wrong in your dealings with them.
This sucks. You know I’m guilty of believing these are easy to repair/troubleshoot. I apologize for being arrogant in my earlier replies. Sometimes I forget what it was like being new to printing.
@BambuLab this may be something to look into?