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Another nice guide!  Love your pictures as always.

How the S4 is pretty good on overclocking.  Does the S4+ see to overclock well? If so what numbers have you got.

S4+ will likely overclock well as its stock is just 200MHZ but I've not tested it enough yet.

We've got plenty of headroom on the PSU but our limiter will likely be temps for anyone with a warm ambient. If you look at the data graph there isn't much headroom left @ 40C before we end up at 90C which is the alarm temp, and 95C which is the cutoff temp.

Edit: As Janet pointed out, also have to factor in that we only have the stock voltage of 0.706V to play with.
Edt2: And overclocking will obviously void any warranty.
Edit3: Initial results at 225M were 2738GH @ 1675W, 87C @ 40C ambient. So +200W for +170GH.

Nice guide once again.

Just one thing, I haven't received my +s yet so I don't know if it's actually aluminium, but the S4 definitely isn't. It's steel.. Might want to correct that.

I'm disappointed that bitmain locked voltage control down, but not surprised after they stripped the S4 of that functionality with a firmware update.

Yes its definitely steel, fixed. The voltage control isn't locked per said, it simply doesn't exist. With string design the variability of voltage is purely down to the output voltage of the PSU. Have a look how bare the 'top' side of the PCB is, there is no DC-DC.

W.R.T. this post: https://bitcointalk.org/index.php?topic=1032458.msg11156572#msg11156572

Why are you advising people inquiring about the existence of capacitors that there are none when your high-res picture clearly shows them all over the place?

Where are you seeing liquid caps?

Why are you looking for "liquid" caps?

I misread what he originally asked, nevermind.

Do I need to do anything else than pluggin in the power? No leds, no fans, nothing.. plugged in at 220V  :(

Correct, see my response from the other thread:

Heelo everybody,
I think i made a midstake, i flash my s4+ with the s4 firmware...
And now my antiminer is not stable, sometimes it mine at 1.5 Th...
On bitmian page, i can't see the firmware for s4+....

Can you help me please ?

Thank you so much

I don't see it on the firmware page either.   I would submit a ticket asking for it here - https://bitmain.zendesk.com/hc/en-us . I'm sure they will get the firmware to you.

Was the not stable before firmware uploading with S4 firmware?  Or did it happen after?

here it is:
https://drive.google.com/open?id=0B9vRdgCJFqmkeTNvQ3JzTGpxUXc&authuser=0 (https://drive.google.com/open?id=0B9vRdgCJFqmkeTNvQ3JzTGpxUXc&authuser=0)

That's 20150518 which isn't the stock firmware. It should work but we're not exactly sure what the changelog is over stock.

bitmain sent me that file a while ago.

Hi guys,
Thank you so much for your help !
I'll try with this file.
See you soon.
@+

im in north america what kind of circuit do i need to wire up to get this to work everything for 240v uses those t shaped circuits and wires...can i simply wire up a dbl breaker and run 2 110v lines to a standard circuit?

On electricity don't try to be cheap unless you are asking for problems.  Anwser is have I seen it done yes 2 separate 110 breakers and a higher gauge wire... yes but don't do it.

It is very easy either get a electrician or learn how to do it (if legal in your area).   And get a true 220/240 breaker.   And then use the right gauge wire.  With so much electricity if you don't have the proper wire you will get hot wire and possible fire.

I have purchased an s4+ on ebay not knowing that it had special power requirements, is there anywhere that i can get a wiring diagram to help set this up, and were can i purchase the power cord needed to run this high voltage. Any help will be appreciated. Thanks bigdaddy3

You can try to buy a converter for 110 to 220v in some cases (it'll be pretty expensive, best to just find a 220v in your house no matter how much time it takes, will be hard to get if you don't have any), there are 220v outlets in most American houses if you live in America. Just have to find em, most of them are either in the garage or in the kitchen, I.e stove. Please correct me if I am wrong :)

This cord should work:
https://www.amazon.com/Tripp-Lite-Heavy-Duty-IEC-320-C13-P007-006/dp/B0027JRMD0/ref=pd_sim_147_1?_encoding=UTF8&psc=1&refRID=F31GD6TQD2Q0S7AG6XVB

About that... If you mean getting a step-up transformer -- beware of ANY sold as 'International voltage converters" such as sold by http://www.world-import.com/transformers.htm

In short, they are woefully over-rated for power. I had 2 of their 2,000w transformers with early s9's (1,450-1500w) on them. Ran very warm which is normal for xmfr's but after 3 months both transformers had failed. I opened them up to find charred windings. Now we know why they are so cheap...

Replaced them with REAL transformers from AutomationDirect for around $189 each (vs $54) and as expected, being industrial units they should last forever.

Yes i do have 220 in my garage, but it is not compatible with the cord that you have listed( 110 3 prong), i have checked lowes website and do not see any outlets and or adapters that will work, Thanks for the help .

Perhaps this then? Should work with this one as the plug is rated for 220v. http://www.sfcable.com/8ft-nema-l6-20p-usa-3-pin-plug-to-c13-sjt-power-cord.html?gdffi=afde19f4670e4f608861514cfe93a30d&gdfms=BF7B35F16DFB4E1BBD775C7026C0A9F2&gclid=CjwKEAiAq8bEBRDuuOuyspf5oyMSJAAcsEyWri_YbgS4_zq6Aqw1bl0LdMxfVIRUDH8LncScsyq9PxoCd_fw_wcB

Ok i have the correct cord and power to the s4+ now but i cant get the ip address by using the ipreporter or by logging onto my modem, javascript:void(0); any ideas as to what could be wrong with the machine or me?

I got the ip and it is up and hashing,Thanks.