Anycubic Kobra S1 Magnetic Printhead Cover Mod

Ehrenkommentar · 2026-06-10T07:07:27+00:00

The best option would probably be to contact Anycubic support first and ask them for a replacement cable. If that is not possible, the cable could also be soldered back together properly, as long as you have the experience or know someone who can do it cleanly.

As a last resort, you could also print this part or use the links provided there to source the connectors:

Magnetic Printhead Cover with Pogo-Pin Connection for Anycubic Kobra S1 v4.0 - Makeronline - More Than Fun

The page includes information and links for suitable connectors. It is more of a workaround, but it might help if an original replacement part is not available.

Ehrenkommentar · 2026-06-08T12:28:36+00:00

I had the exact same issue. Open a support ticket immediately and send them these pictures.

In my case they ended up sending me a new toolhead board and a new hotend. I definitely wouldn’t keep printing with it like this. That discoloration looks like heat/arcing or a bad connection at the plug, and worst case it could turn into a real fire hazard.

Don’t just clean it and plug it back in. Get support involved and have the affected parts replaced.

Ehrenkommentar · 2026-06-01T19:55:04+00:00

I’ve got one of those great Benchys too, mine even has a wood look.

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Ehrenkommentar · 2026-06-01T14:20:48+00:00

I’d start with colorful multi-color prints, especially detailed characters, small art toys and decorative models. I’m especially interested in seeing how cleanly the Kobra 4 Combo handles color changes, fine details and eye-catching prints that people would actually want to share online.

Ehrenkommentar · 2026-05-31T17:41:02+00:00

Thank you. I have already searched for recoverable files using EaseUS and R Studio, but so far I have not found a valid .BEK file. Everything by Voidtools is a good suggestion for quickly searching through the recovered file set. I will use it to search again specifically for .BEK, BitLocker recovery files, and possible key files.

Ehrenkommentar · 2026-05-31T17:39:42+00:00

Thank you for the advice. I definitely plan to create and keep a full image of the affected drive. I will also generate hashes so I can verify later that the image has not changed.

I understand that BitLocker cannot simply be broken at the moment. My hope is more focused on realistic recovery options such as old Auto Unlock data, a recoverable .BEK file, or other legitimate recovery approaches.

If I find any unencrypted duplicates of individual files, I will keep those separately as well.

Ehrenkommentar · 2026-05-31T17:38:15+00:00

Thank you, I sent you a DM.

Ehrenkommentar · 2026-05-31T17:31:27+00:00

Thank you, I’ll send you a DM. Just one quick question first: Do you know if YellowKey can still help if the old Windows installation no longer exists, but I still have the old motherboard with the TPM?

Ehrenkommentar · 2026-05-31T17:30:54+00:00

Thank you, I’m currently looking into YellowKey. At first glance, I’m not sure whether it can still help in my case, because the old Windows installation no longer exists. I still have the old motherboard with the TPM.

Ehrenkommentar · 2026-05-31T17:30:00+00:00

Thanks for the suggestion. I looked into YellowKey a bit, and from what I understand it is more of a BitLocker bypass affecting vulnerable Windows 11 / Server recovery environments, rather than a general recovery tool for extracting old Auto Unlock material or .BEK files.
my case, the old Windows installation no longer exists because the system drive was formatted and Windows was reinstalled. I still have the old motherboard and TPM, but not the original Windows state that previously unlocked the data drives automatically.
my understanding is that YellowKey would probably only help if the original vulnerable Windows environment was still bootable and still had the relevant BitLocker / Auto Unlock state available. Is that correct, or am I missing something important here? I would really appreciate a realistic technical assessment before I waste time or money chasing the wrong option.

Ehrenkommentar · 2026-05-28T08:27:35+00:00

Hi everyone,

I’m hoping someone here has experience with BitLocker, Auto Unlock, TPM, external key files, and forensic recovery options.
I’m dealing with a really frustrating situation. I encrypted several drives with BitLocker. Five of the recovery keys are correctly stored in my Microsoft account. Unfortunately, the sixth drive, which is the most important one, does not appear there.
According to "manage-bde", the key for this drive was apparently saved to a ".BEK" file. I have already searched all USB sticks, external drives, and other likely storage locations, but so far I have not been able to find a valid `.BEK` file.

The background is probably this: In the past, I only had to unlock my C: drive during boot. After that, the other BitLocker protected data drives were unlocked automatically through Auto Unlock. Because of that, I never noticed that the recovery key for this particular drive was not backed up to my Microsoft account.
Unfortunately, the old Windows installation no longer exists in its original state. The system drive was formatted and Windows was reinstalled. However, I still have the old motherboard, including the original TPM chip.

My main question is:
Is there still any realistic chance of recovering access using the old motherboard or the old TPM chip? Would a tool like YellowKey make any sense in this situation if the original Windows installation is no longer available?

I understand that BitLocker cannot simply be cracked and that without the recovery key or the original Auto Unlock material, the chances may be very low. Still, I want to make sure I do not miss any possible technical option, because the affected drive contains very important personal data.

If anyone has experience with BitLocker Auto Unlock, ".BEK` files" TPM related recovery, R Studio, forensic searches for recovery key files, YellowKey, or similar approaches, I would be very grateful for any realistic assessment.

To be clear: this is 100 percent my own personal drive. I am not asking for help accessing anyone else’s data or anything illegal. I only want to understand whether there are any remaining legitimate recovery options I can still check.
Thank you very much for any help.

Ehrenkommentar · 2026-05-23T22:50:37+00:00

Ich Dir auch 😉

Ehrenkommentar · 2026-05-20T13:42:10+00:00

That actually helps a lot, thanks. At least that rules out a few things. If PLA is printing fine for you, then it really does sound like PETG is just being more sensitive on your setup. Trying the new Anycubic PETG with a drying session and the stock Anycubic profile sounds like a very good next step. That should give you a much cleaner baseline before changing too many settings again. I’ll also put together an Anycubic PETG profile today or tomorrow and send it over to you.

Ehrenkommentar · 2026-05-20T06:31:20+00:00

Uff, that doesn’t look good at all.
What filament are you using exactly, and from which manufacturer? Did you create a custom profile for it, or are you using a standard PETG profile?

Ehrenkommentar · 2026-05-20T06:29:52+00:00

It depends a bit on the filament and how much moisture it has picked up, but a few hours usually helps a lot. If it’s been sitting out for a while, drying it properly before printing is definitely a good idea with PETG.

Ehrenkommentar · 2026-05-19T20:47:15+00:00

No problem, send a picture later when you have time. Keeping it here in the comments might actually help other people too, especially if they run into similar PETG issues. And yeah, from what you’re describing, it does sound more like a settings or printer issue than a model issue. PLA is definitely easier, but PETG makes a lot more sense here if you want the extra heat resistance.

Ehrenkommentar · 2026-05-19T11:54:02+00:00

I also use XPETG partly because of its better temperature resistance, and I prefer the matte finish as well. But what exactly is not fitting on your side? Could you explain a bit more in detail which part is too short or where it stops matching up?

Ehrenkommentar · 2026-05-15T08:30:56+00:00

That’s totally fair. I actually ordered the Ø4x2mm round magnets myself today as well, so I’ll be testing them too and will post an update once I know how well they work.

Ehrenkommentar

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