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servis_null
 Post subject: WD5000AAKS PCB repair
PostPosted: November 29th, 2016, 3:10 
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Joined: November 29th, 2016, 3:06
Posts: 1
Location: Croatia
Hi to all,

i need help to repair my dead drive. Not spinning.

WD Caviar SE16 - WD5000AAKS
PCB: 2061 - 701477-900 AD XC 4V10 02L3 J 0002230 8232



I checked R64, R67, D3, D4 and they are good, but I have short to ground on D1 pins (with and without soldered diode)

Any help?

Regards
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fzabkar
 Post subject: Re: WD5000AAKS PCB repair
PostPosted: November 29th, 2016, 14:49 
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Joined: September 8th, 2009, 18:21
Posts: 16960
Location: Australia
D1 is a Schottky diode. It is part of the Vcore supply. IIRC, you should normally measure around 100 ohms to ground at this point. If you indeed measure 0 ohms, then the MCU, or one of the Vcore filter/bypass capacitors (eg C25/C24), is probably shorted.

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