ST4000VN008

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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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managerharry
  • managerharry
  • Posts: 111
  • Joined: March 24th, 2010, 21:08
  • Location: California

ST4000VN008

May 18th, 2022, 3:26

Seagate Ironwolf ST4000VN008. Drive was damaged by a faulty power supply. 5V TVS diode was shorted, along with 2 5v 0hm resistors. Replaced those, but while I get 5V on the first resistor, I only get .08 on the second and the new tvs diode and surrounding caps. So clearly there's an addition fault, any tips on tracking it down?

Thanks. Photo attached.
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ST4000VN008-pcb.jpg
gps31
  • gps31
  • Posts: 335
  • Joined: January 18th, 2010, 23:53
  • Location: india

Re: ST4000VN008

May 18th, 2022, 3:53

Check continuity between those Resisters, Looks like tracks damaged
fzabkar
  • fzabkar
  • Posts: 15539
  • Joined: September 8th, 2009, 18:21
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Re: ST4000VN008

May 18th, 2022, 14:02

The resistors should be vertical, not horizontal.
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Resistors_wrong_orientation.jpg
Resistors_wrong_orientation.jpg (123.29 KiB) Viewed 4698 times
managerharry
  • managerharry
  • Posts: 111
  • Joined: March 24th, 2010, 21:08
  • Location: California

Re: ST4000VN008

May 18th, 2022, 19:02

Ahhh, damn I'm an idiot. That is why soldering at midnight is a bad idea :lol:
Thank you fzabkar, you are a legend! If you are ever in Los Angeles I owe you many pitchers of beer.
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