Need New Seagate HD model ST 3320620as with CB TTB4398A0

[maxxon]

Hello my external hard drive wont run, the technician noted there was damage on the cb. Now im looking to buy the exact same model to borrow the CB and make it work.
Can someone advise where I can buy this cheap or just buy the TTB4398A0 CB for it?

Will appreciate all the help.

[fzabkar]

Can you describe the failure symptom?

Many times the problem is only a shorted diode, in which case it can simply be removed.