Bitcoin Forum

Read this post and thought I'd share my experience as well...

https://bitcointalk.org/index.php?topic=298826.0

I received my single a week ago after 13 months of bullshit.  Anyways...

I wanted to test the powersupply before hooking up the miner.  I plugged it into the top receptacle of one of my 20A circuit.  Bottom receptacle is powering a 1250W powersupply for a 4x GPU LTC rig.  The instant I plugged in the PSU, the LTC rig restarted itself with 1 GPU no longer spinning.  Tests revealed later that the PCI-e socket which the now fried GPU sat in, is also dead as no other cards work when plugged in.

I dug up an old thinkpad from 10 years ago, hooked up the Single to it and had it hashing so the PSU does work.  Only thing now is that at random times for random durations, it produces an ear piercing high frequency scream like some futuristic sonic torture device.  The scream makes me all nauseous for some weird reason so I've put the whole unit in the shed for now...

Anyways, as noncecents pointed out in the aforementioned thread, if you don't want to take any chances whatsoever, you are better off to buy your own seperate powersupply and not bother with the BFL one.

That sound is capacitor whine. It can happen on brand new top end PSUs and isn't necessarily a sign of impending doom.

At least don't panic...until one of your loved ones catches fire.

Then only react in a "mildly" alerted way. (So as to not further scare the individual who is on fire.)

http://big.assets.huffingtonpost.com/Twerking-Fire-Fail_0.gif

Fear and misinformation is your speciality isn't it :s

Its colloquially known as capacitor whine, however it appears to be coils [which makes sense that PSUs can be affected] https://www.google.co.uk/#q=capacitor+whine&safe=off.

I had two PSU's (not made by BFL) that have made that sound. One eventually degraded to a perpetual burn smell. The other had a whine similar to (but not the same) as described by the OP. Save to say it didn't keep its voltages steady (within specification of the ATX standard).

If it whines you shouldn't continue to run it until it further degrades in it's operation as a PSU.

Fear and Misinformation is not my specialty. It is the exact opposite that people worry about.