Impressive results!  What is your ambient temperature?  Please share more details on exactly how you applied new compound.  Thank you.

If you want to buy from Bitmain, I'd suggest I ordering soon, before their "limited quantity" run is sold out.

Thank you for shipping S5's early!

Looking forward to any new information about S2 upgrade kits.

Good for you!  I'm jealous.  

EDIT:  My S2 has been rock solid for over 7 months.  My S3's were great.  It's only my S5's that overheat with no internet or network connection.

Oops... I made an assumption, that the way my S5's and Opentoe's are working, that will do it.  When there is no internet, there is no new information coming in to the miner to hash.  What at least the 2 of us have seen, is when it's not hashing, it heats up.  I would try that first, so that if you have any hardware failure from overheating, no internet access is a regular problem that should be planned for (the other options mentioned, are not normal operating conditions expected for the miners - just my opinion).

Blocking or unplugging the fan in my mind, could be voiding a warranty.  My test was to simply disconnect my internet - which is a real life occurrence (failed internet service).  It might take a few minutes for the current information to finish its hashing and start beeping, but it will.

I've not seen firmware from Bitmain other than the 2015-01-07 release.  Where is the February one?

I can confirm in my case (by a kill-a-watt) that power consumption does drop way off.  But the heat is really up there (to the touch and immediate ambient).

Thank you.

So I just ran a test, by killing my internet.  Very interesting to watch.  The fans spin slow (at an inaudible level).  The GUI seems to be stuck with the last valid stats from while hashing. 

I'm getting the feeling that the GUI only reports when the machine is actually hashing.  I watched the temps of the heatsinks rise by ~8C during the lull of no hashing (with an infrared thermometer).

After connecting the internet, and the miners quit beeping, then the GUI would report an updated status.  After the beeping stopped (internet connected) the fans also did spin up again (full rpm).

After restarting the internet, 1 miner had blades at 96C & 83C reported.  It would not start hashing again, without a reboot.  The other miner had blades at 93C & 78C reported.  Based on my infrared temp readings, both heatsinks were within 1C of each other.  This miner did start hashing again on its own, after restarting my internet connection.

Here's some absolutes I know after my test of an internet failure:
1) fan speed drop to nothing and the temperature rises during the failure
2) the windows GUI does not get updated status from the miner during the failure

So why don't the fans stay up to speed to keep the chips cooling during an internet failure? 

Beyond that, I only have assumptions (though educated guesses, they are still guesses).  It's as though the system is not monitoring its own temps during the internet failure, to adjust fan speed and maintain an operating temperature.

If I was a manufacturer, or had a miner that I didn't have to pay for, I would have let the my internet failure run for more than the 3 or 4 minutes I dared to (watching the temps go up).  I would be interested to see how high the temps would really go after 30 minutes or more (but not on my out-of-pocket equipment).

Ah!  I think you have landed on an issue.  Thank you.

The physical truth is, at the time of the screenshot, the fan was not at a high rpm (judging from startup/reboot speeds it was in the 300 to 500 rpm range); and the heat sink fins were too hot to keep my fingers on.  I believe the heat reported, but not the fan speed.

But that still makes me wonder why the 80c safety didn't kick in.  This also happened about 3-4 weeks before this screenshot.  That time it reported 106C, but I didn't grab a screenshot, I was freaked out by the high temp and hurried to power down and move air over them with a box fan.

I agree - it doesn't make sense.  My S3's properly honored that 80C safety shutoff.  But on my pair of S5's, it does not shutoff over 80C.  BTW, the miners really do heat up and it's not just an errant report from the firmware.

A few weeks ago when Ghash went down, my Nicehash limit for return value wasn't met and so it stopped hashing (no rollover) and I did catch this screenshot.

I wish some others would test this.  I had this same type of thing happen about 6 weeks ago.  The firmware safety net of 80C shutdown did NOT work (yes, mine is checked).  When I saw it, one blade was up to 106C.  I mentioned this before, here, but with the Chinese New Year timing, I'm guessing it didn't fall on any ears at Bitmain.

I own a small business too.  I infrequently use emoticons in my business emails.  I hate the written word because it's difficult to tell the intent and emotion of the writer.  I don't feel that emoticons should be a taboo for business emails.  They should be used sparingly.  I must have the right balance, having just celebrated 15 years in business.  I never had a client complain, yet.

Having said that, I think sidehack already said it perfectly:

Bitmain reps here, do need help in the appropriate use of emoticons.

Whether the exchange is in Bitcoin or something else, whether transacted online or on mainstreet, it's all the same - you can get scammed or have a bad experience.  more than once I've recieved a less than proper amount of cash back at a mainstreet (KFC) business. It's a matter of knowing the rules of the transaction - the means of value exchange (BTC, USD, IQD, Euro, etc) has nothing to do with the transaction.  Have a problem with rules? Then that's a different discussion.

You barked up the tree with Dogie on this one.  I'm grateful for his, and everyone's good help here.  I'll also speak up with him or others when they are wrong.

I would suggest get a PSU from Sidehack (http://www.gekkoscience.com)  If you can feed it 240v, you can get one for 20% of the Seasonic.  Otherwise, get 2 of his smaller supplies.  I personally like the idea of 2 psu's over a single.  If you have two and one goes bad, you're still running at 50%.  If you have a single psu for 2 miners, if it goes bad, you're 100% dead.

I like the innovation of making a dual algorithm chip that is efficient.  I'm excited to be able to support you.

They shouldn't have to deal with a ddos attack.  It's a shame that someone threatened bitmain at all.  I was very upset at how they handled their price increase this week, but a ddos attack is ridiculous. I think they have handled that perfectly!

I applaud them for not caving in to the ransom.

Strato has done it and was going to post some pics of his setup.

I only have 2 units on a wire rack, just standing on end loose (not tied down).  No problems for mine.

Is that a "treasure map" to the long lost pictures?
[/quote]

  I was editing the message to get it to link to the exact post.  Not elegant, but this quote works

Yes.. Check out this specific message from Philip that has a number of pictures

Do you have some suggestions on who he can use to ship to you?