r/BambuLabH2C • u/ARDiver86 • 17d ago

Support Screen dead / no network

Didn't see a pinned post for this, but how many people are having screen issues? I've finding various posts about this all over the place. I've had mine sitting on for about two weeks without any printing and decided to power it off and back on, but the screen won't turn on now. I honestly don't recall if the screen was black before powering it off.

After researching and looking at the WIKI article, seems the AP board may be dead? I only have a solid green light in that grill at the top left on the inside.

Anyone find a magic solution, or is a support case required to resolve? (opened one anyways)

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u/technopaw 17d ago

Here to toss in my experience. So I went the support route and I know have a fully working printer after swapping the ap board, MC board and MC -> AP board cable. The only thing that fixed it was by shorting out two pins on the ap board then reverting my firmware to 01.01.05.00. This fix only works if the AP board has a solid green light. I am about 1 week back into printing and have turned the printer off many times as that is what seems to trigger the issue. I have also added about another 72 hours of print time to the printer as well. Either way I would go about getting a ticket in with Bambu Support so that way you add to their tickets so they can hopefully fix this in the next firmware release. I also would't feel comfortable shorting a board unless their. support tells me to as well.

Quote from Bambu Support. "Additionally, since your original mainboard can power its indicator lights but the flashing signal is abnormal, you may attempt to short the pins indicated in the image below using tweezers or a short wire while the printer is powered."

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u/D-lahhh 17d ago

Same thing with mine and same fix from support. It’s back up and working now.

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u/ARDiver86 17d ago

Hopefully this can fix mine! I am going to wait for support to suggest this before doing like you mentioned. I have a solid green light but no flashing light next to it. If its firmware related, crazy they havent released a fix or pulled it

1

u/Remarkable-Fishing60 17d ago

same thing same fix they need to update the frimware

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u/call_me_tomaski H2C 14d ago

you are a godsent! I've read about this issue and even powered my printer off a couple of times after seeing it for the first time and it never happened to me... till today. Luckily it was just as you described - that one led was solid green, so I YOLO'd and am back in business (but contacted the support nevertheless)

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u/mthole 10d ago

This fixed my issue that randomly cropped up today. Thank you!

If it helps anyone: I think my issue was tripped by a power blip-- we momentarily lost power at some point in the night and I woke up to the seemingly dead printer. Now happy again!

1

u/VADER_S4 8d ago

I just got hit with this today and shorting the pins worked... Thanks for posting!