I have a question --> Could a hard drive's bad circuit board (ie : short circuit) burn an external AC adapter ?
That depends, any decent external switchmode adapter will shut itself down when it sees a short. However, with the cheap PSUs they generally supply with external cases anything could happen.
What I also have to find out is if
1- the problem is ONLY with the hard drive,
Follow what I say below regarding removing/identifying the component and then plug it into a decent ATX PSU - you don't need anything else plugged in. You can start the PSU by shorting the green wire in the ATX motherboard connector to any black wire, (ie. signal /PS_ON to GND, ATX pinout
). Then just let it run for a few hours by itself - all ATX PSUs will shut off if they see a short. If the PSU is still running at the end, then all that remains is to see if you can get data off of the HDD.
2- or if I've been unlucky and either or both my enclosure and brand new sata to USB converter went bad and one (or the other) destroyed my hard drive at some point. It's possible, isn't it?
More likely, the adapter that came with the enclosure.
3- and/or my enclosure destroyed my hard drive, and then my hard drive destroyed my STA to USB converter...
of course, I'm afraid to exchange my burnt SATA to USB converter and burn the new one too -- could a bad drive really do that???
Used HDDs are cheap, (very cheap), grab one from a PC repair place. AU$5 for a used 40GB SATA HDD is about the going rate here. You can use it to test the converter first
then the external enclosure. Use a known working ATX PSU or adapter before you even think of testing using the adapters that came with the converter/external case.
I could follow 4wd's suggestion and bypass the diode... Is the diode what I "circled" in the picture?
First you need to ascertain whether the component is in fact a diode.
Do this by removing the component, any soldering iron with about a 2-3mm spade bit will do.
Then grab your multimeter, set it to resistance scale, put one probe on the (ex)diode pad on the right then check for a short to some of the pins on the SATA power connector. The pad on the left already goes to what is +5V on the SATA power connector, (SATA power
), the pad on the right should go to GND.
If you get a short from the right pad to some of the power connector pins that correspond to GND then it's 99.9% probable it was a protection diode, (it's there to protect against the power being reversed).
Check once more to make sure there is no short
between the left and right diode pad.
You should be able to plug the drive into a PSU and retrieve data off of it - I recommend you plug it into a spare connector of a real
ATX PSU. They are far better than the cheap adapters supplied with external cases.
There's no problem running the drive like this, my mate has run one this way for a couple of years.
As above, that diode is only there to sacrifice itself if you happen to reverse connect the power.
BTW, which connector was used to supply power when it fried (SATA or 4pin molex) ?