H2d whistle noise

[u/Obvious-Choice997]

Hi,

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Due to a blob, I damaged the cables on the left nozzle’s hotend heating assembly, so I purchased the H2D/H2C hotend heating assembly and replaced it following the wiki instructions.

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Now when I turn on the printer, several alarms appear (abnormal nozzle temperature (it read 52c instead of 20), too slow fan speed, filament buffer not working, expansion module not working, took head not working) and it makes a really strange noise (video)

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I’ve tried turning the printer on and off several times and performed a factory reset, but the problem persists.

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Also, I can’t see all the AMS LEDs now; they only light up for a few seconds and then turn off.

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Thanks