Q1: I have a Hitachi HDD model HDT721075SLA380.
The controller of this HDD is broken, it has something to do with the power.
My controller has the code ‘0A29871’ to the PCB itself and the infineon
microcontroller has the code ‘0A56992’.
Q2: I should replace the pcb of my hard disk
HDT721075SLA380 HITACHI SATA 3.0 GB / S
P / N 0A38111
S / N MG0529MA
750GB MLC BA30313
Number on chip