Hotend burns and removes the part off the bed

Hello! I have my p1s for almost a year and everything was good until now. Sometimes at some moment of the printing, the nozzle looks like it stuck in the printing part, heat it and toast/burn it, and then with the movement of the extruder it pushs and detachs the part from the heated bed, ruining thewhole print. This happens randomly since a week it never happened before.

I checked the hotend and it looks fine but it has black stuff around and thetermistor can be separated from it. Anyway, I think the issue is in the hot end/termistor. Attached you can find some pictures of wrong parts. If you need anything else please let me know.



Is that charred plastic or bits of the nozzle sock?

There isn’t any plastic in the nozzle but i realized yesterday that the nozzle sock is broken. I replace it and I’m running a test I’ll edit the topic with the result and if it is the solution or not I also ordered 2 new hotends.

Edit: finally, with the old hotend and the new silicone sock it is working fine. I will replace the hotend anyway. If you are having any issue related to the hot end, as a general advice take into de account the maintenance times of bambulab.

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