Interesting problem! And truly bad product desing....
Arno
http://www.simpletech.com/support/guides/user-guides/60000-00146-001.pdf
Not much there, but it says that the external PSU is 5V, 1.0A. That's not
enough to power a 1TB drive, but perhaps enough additional power is
available through the USB port to make up the difference.
Do you feel lucky?
"iws" <nos...@nospam.com> wrote in message
news:lMfsl.66007$2O4....@newsfe03.iad...
http://www.simpletech.com/support/guides/user-guides/60000-00146-001.pdf
Not much there, but it says that the external PSU is 5V, 1.0A. That's not
enough to power a 1TB drive, but perhaps enough additional power is
available through the USB port to make up the difference.
Do you feel lucky?
"iws" <nos...@nospam.com> wrote in message
news:lMfsl.66007$2O4....@newsfe03.iad...
Not really! The drive you link to is their portable one which is
considerably smaller than mine - mine is a 3.5" desktop drive while their
portables are 2.5" ones that require less power. I'm almost certain mine
takes 12 volts.
I may just have to check the configurations of the candidate supplies and
hope that their polarities are all the same then check which power plugs fit
the drive (when it's off.) After that, flip a coin maybe. Or buy the exact
same drive again at Fry's Electronics, check the power adapter used then
return it.
Can you open the case? If so, then identify the power pins on your
drive and check for continuity with your power socket using a
multimeter. That should give you the required voltage(s) and the
correct polarity.
Another guide would the polarity and rating of any electrolytic
capacitors.
A photo might help also.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
First you can check whether polarity on all your PSUs is the same.
On the 12V only supplies si Have, all have ground on the outside
and +12V in the center.
You can also open the drive and look which pin is ground. Typically
ground is wired in black. You could also use a multimeter and
measure resistances from obvious ground points on the inside.
Often the drive case is ground. With a traditional 4-pin
molex connector, the wires in the middle are ground.
Arno
All current 3.5" drives take 12V and 5V. It is relatively easy to
use only a 12V supply and generate 5V from the 12V inside the case.
While possible, generating 12V from 5V is far more expensive and
not done for this application.
2.5" drives typically only take 5V.
Arno
Good idea. There are enough competent people here to
interpret that. Post a photograph of the insiodes and
a close-up of the power inlet.
Arno
"iws" <nos...@nospam.com> wrote in message news:lMfsl.66007$2O4....@newsfe03.iad...
http://www.newegg.com/Product/Product.aspx?Item=N82E16822100032
Why in the hell would you suggest that he/she open the drive and find the
polarity when it shows right on the back of the drive that the TIP is positive
and Sleeve is ground???
http://www.newegg.com/Product/Product.aspx?Item=N82E16822100032
I wasn't sure of the power supplied on a USB port, so I looked it up. The
standard is also 5V, at no great level of current. I agree that a 5 to 12
volt converter in an external housing would be improbable.
The link from another poster (Gman) for a newer model (with both USB and
Firewire interfaces) shows what may be a single-pin power connector (not
counting ground).
I have several external drive enclosures with varying levels of cheapness.
(No rampant stallions in the lot.) All use multipin connectors.
Sorry to be unhelpful.
"Arno" <m...@privacy.net> wrote in message
news:71e5hbF...@mid.individual.net...
The drive has the usual power pin configuration indicated as center pin
positive as expected. Opening the drive will void the warranty according to
a sticker I'd have to remove. Interestingly, the drive is assembled in the
US.
> http://www.newegg.com/Product/Product.aspx?Item=N82E16822100032
Well, the OP stated "But this drive has nothing either on it or in the
instructions to suggest the power requirements." I take that to
include polarity, since it is the only thing non-obvious.
Apart from polarity, this will be a 12V 1.5...2A psu.
Arno
Well, so there is an indication of power polarity. Now look for
a PSU with the same polarity (marked in the type-shield) and
12V at 1.5...2A. That will do it.
Arno
The drive has the usual power pin configuration indicated as center pin
The drive has the usual power pin configuration indicated as center pin
The drive has the usual power pin configuration indicated as center pin
Very good and you are welcome.
Arno
Now i need to track down a replacement 12V/5V supply to replace a bad one that
wont output enough amperage to run my external case. It has a typical 4 pin
mini DIN
>Now i need to track down a replacement 12V/5V supply to replace a bad one that
>wont output enough amperage to run my external case. It has a typical 4 pin
>mini DIN
My PSU (model JHS-Q05/12-S335, 6-pin mini DIN) is rated at 12V/2.0A +
5V/2.0A while my Seagate hard drive is rated at 12V/0.52A and
5V/0.72A.
However the PSU's plastic case feels very warm, even when the drive is
idling. Somehow I think the PSU's rating is very optimistic.
Here is the label:
http://farm3.static.flickr.com/2254/2518719627_1ce618526b_o.gif
Tales of woe, and some recommendations for replacements:
http://www.badcaps.net/forum/showthread.php?t=1251
I have found replacements online but i am not willing to spend the $30-$50 for
one. I have found a 12V/5V 2A supply at a local goodwill type store. I will
just likely take the cable from the bad supply and solder it onto the
replacement supply at its PC board.