Mainboard broken?

After not using for a month, I turned on the Bambu Lab A1 and it won’t start. There is a mechanical noise, but the display, the AMS, the motherboard, and the micro SD connection are not responding (LED). The LED in the print head at the back flashes in time with the mechanical noise.
I have contacted support.

My guess is that the motherboard and possibly also the AMS Lite have failed.

Or is there anything else I can do?

Here is the wiki for diagnosing power issues on the A1 platform.

Yes, I’ve checked all that too. It’s also in my description (led’s). That’s probably the best I can do?!

Do you still have warranty on it ? Have you raised a ticket to bambu support for issues found ? They are very good at helping , imho

YesI bought the device 4 months ago. I have opened a ticket as already written above. Now I am waiting. I have already asked for the whole device to be replaced in the ticket. As I am not able to remove and install electrical components myself.

Today I opened the device with a friend who is very technically adept. Is it true that my A1, which was bought in April this year in the Bambustore, still has a mainboard installed where there is an A in the sixth place in the serial number?

I have read that this particular one had a recall in 2024.

The A1 recall was due to the heatbed and cable which only effected 0.05% of printers sold at the time, all A1 users at the time were offered a refund or new heatbed and cable
A1 recall - Bambu lab | Bambu Lab US


Fitted by me verified by Bambu lab

Ah I just read it only concerned the US market. For me it’s EU. So it has no relevance for me.

Mainly the US market , im UK

Ok, so I’m worried after all. I’ll wait and see what technical support says. It’s just dragging on because of the time difference.

If it is an issue from bambu labs end (warranty) they will fix it , new board or new what ever they deem the issue to be , there is no real cause for concern , (i think it was around 4 months for the A1 recall issue to be sorted out and i havent stopped printing since)

A brief interim report. Every day until today there was always a message from support. They was sent step-by-step instructions on what to do. Now I’ll wait and see what happens next. We are on day four.

It could be the USB cable. Then you have to see if it is under warranty. Or maybe the mainboard. As things stand now. Will I get everything sent directly or will each part be sent in a separate shipment in the exclusion procedure? In my opinion, it would be cheaper overall to replace the thing.

I find it a pity that there is no European support that fits better into this time zone. This makes everything take a very long time.

any updates? and have you gotten an estimate from local repair techs?

No more news today. And the device still has an 8-month warranty.

Update I have just received a message. Based on the information, I will first get a new power supply and a new AC board as a replacement before replacing it.
Then I’ll wait for the parts.

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I didn’t stop printing even during the recall. I did replace the bed when I got it, but I wasn’t going to stop printing for over caution. BTW, I had added that piece you could print on the cable. Sure I might have been one of that .05% but I was having too much fun.

Update: I received my tracking number on Sunday. Now I’m waiting for the parts.

Update: the spare parts ac board and power supply arrived today. Everything installed and the printer is running again.

But -

The AMS is still not responding. And when you open it at the top, it smells of burnt electronics. Used the ticket again straight away.