Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


4 posts

Wannabe Geek

#293401 18-Jan-2022 17:55
Send private message

Title almost says it all, managed to feed reverse 12v into an 8tb HDD (external usb adaptor with 12v feed for 3.5" HDD)


Didn't kill it straight away, i had flipped the polarity a few times trying to work out which way was which and not killed anything. Left it connected the wrong way however and then it died after something got hot.


Is it likely to be repairable and at what cost? Drive is worth $240.







Create new topic
Affiliate link

Affiliate link: You will find anything you want at MightyApe.


Trash bandit
11920 posts

Uber Geek

Retired Mod
ID Verified
Lifetime subscriber

  #2853031 18-Jan-2022 18:06
Send private message

If you can find the same model controller board somewhere, then you can try swapping that. If need data from drive, then a recovery service will be other option.

       Gavin / xpd / FastRaccoon


Website - Photo Gallery - Instagram




4 posts

Wannabe Geek

  #2853041 18-Jan-2022 18:34
Send private message

Drive is empty.


I didn't have any luck going that route initially, but i googled the right codes this time and found a PCB for sale.


Auction says you might need to bios swap the boards, that's out of my skill set. The price is right though.


PCB Board



497 posts

Ultimate Geek

  #2853049 18-Jan-2022 18:52
Send private message

I want to know how you managed to reverse the polarity in the first place. Got a pic of the adapter you used?


4 posts

Wannabe Geek

  #2853053 18-Jan-2022 19:10
Send private message

Hopefully this works, the adapters are bi directional. I would like to jaycar store but i'm not rated high enough.


1331 posts

Uber Geek

  #2853070 18-Jan-2022 20:09
Send private message

I would have thought that there would have been a diode or bridge rectifier on the PCB to prevent exactly this.


A 5 cent diode could have saved a world of pain.



I know enough to be dangerous

1138 posts

Uber Geek


  #2853071 18-Jan-2022 20:13
Send private message

You sure you've killed the drive also and not just the USB adaptor?



25134 posts

Uber Geek


  #2853076 18-Jan-2022 20:23
Send private message

There is usually a diode across the supply pins of the drive to clamp the voltage if polarity is applied incorrectly. You may find that has overheated and is now conducting in both directions and clamping the supply down. You may have also toasted that supply by powering into what is almost a short for an extended amount of time.


750 posts

Ultimate Geek

Lifetime subscriber

  #2853085 18-Jan-2022 21:27
Send private message

Yeah, I'd expect a diode and fusible resistor on each supply rail. Pull the board and have a good look at the PCB layout in the power connector area.


4 posts

Wannabe Geek

  #2853093 18-Jan-2022 22:15
Send private message

Thankfully adapter doesn't seem to care, spins up other 3.5" hdd's no issues.


I've had the board out and everything looked in good condition to me. Made me think i might have burnt the motor out.


I'll take another look around the power delivery pins.


Tried following a guide on hddzone about testing a board using multimeter, instructions are pretty vague though.


Having trouble identifying what components are the diodes. Board model is G4013A, best quality photo i could find.










3036 posts

Uber Geek

  #2853200 19-Jan-2022 09:44
Send private message



Is it likely to be repairable and at what cost? Drive is worth $240



Its toast , bin it.

Board swaps are far from simple procedures on modern HD's .
Unless you have the tools to test & replace IC's on the board, you arnt going to fix it . Dont assume its just 1 component thats fried
How will you assess any INTERNAL damage ?


If you did get it repaired, would you honestly rely on that HD for anything


For the sake of a $240 drive .......... its just not worth it .



Create new topic

News and reviews »

New Zealand Video Game Sales Reaches $540 Million
Posted 26-Jun-2022 14:49

Github Copilot Generally Available to All Developers
Posted 26-Jun-2022 14:37

Logitech G Introduces the New Astro A10 Headset
Posted 26-Jun-2022 14:20

Fitbit introduces Sleep Profiles
Posted 26-Jun-2022 14:11

Synology Introduces FlashStation FS3410
Posted 26-Jun-2022 14:04

Intel Arc A380 Graphics First Available in China
Posted 15-Jun-2022 17:08

JBL Introduces PartyBox Encore Essential Speaker
Posted 15-Jun-2022 17:05

New TVNZ+ streaming brand launches
Posted 13-Jun-2022 08:35

Chromecast With Google TV Review
Posted 10-Jun-2022 17:10

Xbox Gaming on Your Samsung Smart TV No Console Required
Posted 10-Jun-2022 00:01

Xbox Cloud Gaming Now Available in New Zealand
Posted 10-Jun-2022 00:01

HP Envy Inspire 7900e Review
Posted 9-Jun-2022 20:31

Philips Hue Starter Kit Review
Posted 4-Jun-2022 11:10

Sony Expands Its Wireless Speaker X-series Range
Posted 4-Jun-2022 10:25

Microsoft Updates Surface Laptop Go With 11th Gen Intel CPUs
Posted 2-Jun-2022 07:12

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.