@Kurtroedeger Brown outs cause damage through high current draws.
When the resistance (load) is constant and the voltage drops, Ohm"s Law says the current rises. Components are rated for both voltage and current, and if the current gets too high they can be damaged.
Usually it's capacitors that start failing from overcurrent, which affects the isolation and signal transfer of various circuits; and poor voltage regulation.
[End of mansplain] 😅