99% of intermittent bed sensor problems are going to be this wire. It is very poorly routed from the factory. UPDATE: Bambu has issued a replacement cable with new routing instructions. But you will have to wait on their support.
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parts info from The Equalizor comment:
SMD opamp which is a Chinese clone of the LMV321M5/NOPB. The connectors are Molex PicoBlade compatible.
