used:

clear
cd /etc/config
mv asic-freq asic-freq.before-393MHz
wget -O asic-freq http://dl.dropboxusercontent.com/s/bwbk1wdy0yx1l46/asic-freq.393.75MHz
chmod 664 asic-freq*
read -rsp $'Press enter to continue (Antminer will reboot)... ASICs speed set to 393MHz \n'
reboot

to overclock latest S1 and did pull from dropbox no prob and was able to update well took it anyway. S1 rebooted but now won't take any shares just powered up without blades running.... Yes I can put back at 350 mhz and it works.... so, why does the overclock not work on this S1? If you say check manufacturing date.... where do I find that info?

Muchos gracias

update on my s1 issues: Was the PSU that popped and after replacing with something substantial (thermaltek 80+ Gold 750w) no more issues and she's running just fine @ 199.09 GH/s average. Strangely enough of the 3 I have running I'm able to run the the oldest @ 400MHZ with .1% error and when I try to run the newer 2 over 393. MHZ they has 20x the errors. mhmm. I was about the overclock my newest to 393 but guess I'm reading about some dropbox errors... I shall see... always the good ol manual way...

No pics, it looks exactly the same. I wish I knew if/what cap was fried. I'm not really sure if the 600w psu blew and fried the S1 or the OC did; maybe I've gotten the psu hookup wrong (hopefully). I've seen two different diagrams on the location of the motherboard jumper 3rd/4th and 4th/5th so I tried them both but not a single beep or whirl. Is is also possible that the thermaltek "SmarT" M850W doesn't work for this kind of hookup?

This what I used for OC:

clear
cd /etc/config
mv asic-freq asic-freq.before-393MHz
wget -O asic-freq http://dl.dropboxusercontent.com/s/bwbk1wdy0yx1l46/asic-freq.393.75MHz
chmod 664 asic-freq*
read -rsp $'Press enter to continue (Antminer will reboot)... ASICs speed set to 393MHz \n'
reboot

I had just purchased my S1 "new" but am not sure of the manufacturing date.

The last snapshot I have of the miner stats shows it 393mhz 2160 fan speed and 50/51 temp running at 201 gh/s

I used the OC from the dropbox (yes before I read it was bad) for my S1 and it ran fine. I walked out of the room for 2 minutes and when I came back in my S1 was off and my PSU (thermaltek 600) stank. I upgraded to thermaltek 850 single rail and wired my S1 up but nothing, still no power. Is there a way to fix/salvage my S1?