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 Post subject: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 10:23 
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Joined: January 8th, 2018, 8:38
Posts: 5
Location: Buenos Aires
Hi!, a faulty Power Sata connector damaged the HDD (won't turn on, 0 sound) also the PC shutdown, if the HDD is connected the pc will try to turn ON but will shutdown, if the drive is disconnected the pc will work fine, replaced the PSU after that for safety.

Now, i searched about this problem on this forum and found something about the TVs diodes, in my case this is a WD RED 2TB, already tested the D4 and D3, the D3 was shorted so i removed it, but i couldn't find any R64 or R67 resistors.

What else should i check before connecting the drive?.


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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 11:27 
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Joined: May 21st, 2007, 16:10
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Location: Gothenburg/ Sweden
If it's a known good psu you can use it to try on..but better is if you replace the diod.

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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 11:59 
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Joined: January 8th, 2018, 8:38
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Location: Buenos Aires
mr_spokk wrote:
If it's a known good psu you can use it to try on..but better is if you replace the diod.


Well, tried and is working! now copying files asap. I have another drive with the same issue but first lets see if this one have all the files intact... :shock:


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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 13:04 
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Joined: January 8th, 2018, 8:38
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Location: Buenos Aires
The other drive didn't power on.

Checked again and this one is shorted too (0.00), should i removit and try again or replacing it with the one from the working hdd (temporary) drive?.


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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 13:35 
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Joined: January 8th, 2018, 8:38
Posts: 5
Location: Buenos Aires
falita7 wrote:
The other drive didn't power on.

Checked again and this one is shorted too (0.00), should i removit and try again or replacing it with the one from the working hdd (temporary) drive?.



I can' edit the post, but my mistake!, the R43 has the measurement of 0.00 and doesn't have continuity (no bip on the Tester) Maybe is the same as the R64 and R67 ?, in this case should i create a bridge and see if it works?.


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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 14:58 
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Joined: September 8th, 2009, 18:21
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Location: Australia
falita7 wrote:
the R43 has the measurement of 0.00 and doesn't have continuity (no bip on the Tester)

This statement is contradictory. Do you mean that R43 is open circuit? If so, then bridge it and power up the board to make sure there are no fireworks. Measure the voltages at L3, L5, L8, L1 (near U1 motor controller) and L6 (near jumper block).

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 Post subject: Re: HDD WD20EFRX damaged 5V TVS diode
PostPosted: January 8th, 2018, 16:10 
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Joined: January 8th, 2018, 8:38
Posts: 5
Location: Buenos Aires
fzabkar wrote:
falita7 wrote:
the R43 has the measurement of 0.00 and doesn't have continuity (no bip on the Tester)

This statement is contradictory. Do you mean that R43 is open circuit? If so, then bridge it and power up the board to make sure there are no fireworks. Measure the voltages at L3, L5, L8, L1 (near U1 motor controller) and L6 (near jumper block).


Yes, sorry for the confusion!. After making the bridge... is working!!. :D

Thanks for all the help guys.


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