toshiba mk 2565 gsxn hdd

[themes1]

dear friends, i m new guy for this forum. i want to share ur knowledge for repairing my toshiba HDD. i cant see any TVS diods in this M board. now this HDD is not detecting and no any sound from the motor. can u please advice me hoe to repair it. and i want to know how can i upgrade new firmware. thank you
motor control ic is TLS 2505
Hemantha

Attachments

this is the actual pcb

[fzabkar]

check fuse

[themes1]

check fuse

i cant find out where is the fuse. im an electronic guy. 5v supply is available in the motor control ic. fuses and inductors all r ok

[fzabkar]

xfer ic602