Smoked BK9920

[GriffinRU]

Originally Posted by Arct1k

It looks like the MIC29300-5.0BU High-Current Low-Dropout Regulator is the chip that died... I would be interested to know:-

what this chip does
why it would blow
If it is replaceable or if this would cause other stuff to go (not this is way beyond my ability)

It is part of built-in BEC. And it can be replaced quite easy.
It can be blown buy voltage spikes above 26V and just overtemp.