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From: Arno on 4 May 2010 09:59
Franc Zabkar <fzabkar(a)iinternode.on.net> wrote:
> On Tue, 04 May 2010 09:18:02 +1000, Grant <omg(a)grrr.id.au> put finger
> to keyboard and composed:
>>Interesting, only recently I came across a HDD that shorted out one of
>>the rails, I didn't think to check for a TVS gone short, just assumed
>>from quick look those things were caps across the supply.
> Other manufacturers sometimes place a fuse in series with each TVS
In which case the drive will just not power up.
> Shorted protection diodes are a very common problem, especially in
> external drives. People often plug a 19V laptop adapter into a 12V
> drive ...
There is a reason for those protection diodes...
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno(a)wagner.name
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Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans