Printer stopped mid-way through a 48hr print

I have an issue where the printer stopped printing 1/2 way through a 48-hour print. The printer’s screen is not responding, even after a power cycle. When power is applied the lights come on and you can hear the fans but no screen, or network.

I opened a ticket with BBL, but figured I would try here as well. Any help would be much appreciated.

Does your screen have a blacklight on?

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It does not appear to have a backlight on

Was it previously making weird noises? Maybe from the rear. I ask because with a 24 hour print, there would be a lot of heat soaked into everything. And if the mainboard fan had stopped working, I can see a situation where the heat could cause an issue.

Can you check the AP board lights on the top left side of the printer?

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no strange noises at all, printing PLA so bed temps are low.

Sorry, the AP board, not sure what that is.

It’s not a problem; unfortunately, you will soon know it.

Just found the troubleshooting guide:

Which clarifies the steps and also the AP board location.
I think it is clear, but in case of doubts, ask.
Take your time reading it and try the more straightforward things; if some procedure seems tricky or confusing, I advise not following it.

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After checking this, The AP board has no lights at all.

did you trued to disconnect/connect the AP power cable?

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Yes, I unplugged the ap board as documented

If you follow the troubleshooting as described and don’t notice any improvement or changes, you may have a faulty component(s).
You must wait for BL’s reply unless you have spares at home to replace and test.

In my experience, they will reply and request the logs and a video of the issue with the ticket number in the background. You can start preparing this info, especially recording the video of the problem and also of you following their troubleshooting guide (just put some paper with the number in the background). This is time-consuming, so starting earlier and adequately documenting it may accelerate the process.

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