are these still available?

I wouldn't mind having about 20 of them.  Shipping to the US, in Georgia.  I tried sending a PM and it says" the last message you send was less than 360 seconds ago"  which is totaly bogus cause i havent ever sent a message.   

Could you PM me? Thank you!

yeah, I get a total short when the board is totally removed and nothing hooked up to it. (ie no PSU, no control lines, nor the little circuit board. even the fan is off)  Not even the heat sink was on it. just the bare board.  Every thing looks great on the board, but somewhere, something is totally short.  ( like 0 ohms!) i only wonder!?!   and why all of a sudden after working fine?    Thank you!! cheers!

Hi Dogie!

I had a little problem, and I'm interested if anyone else or yourself have run into this.  Basically, one of the boards to one of my antminer s1's went completely short!?!   When i put a multimeter between any of the 12volt and ground connections, i get a total short 0.00 ohms. 

I took off the heat sink, cleaned off the thermal paste and visually inspected for any wires or something that would be shorting it out-didnt find anything.  It was hashing fine at 201 gh/s , clocked to 393.75, and staying right around 50 degrees.  I had just hooked it up about 3 days ago from some guy on ebay and didn't have any problems until this happened.

So no, I'm running the other blade and its doing just fine, staying at 47 deg and putting out about 101 gh/s.   

My worst fear:  Is that what an antminer blade looks like when it finally burns out? Any components on the board that are known for this? (like maybe a cap shorted?)  Thank you dogie an advance!!!

Thanks for the reply.  Just like the stock fans, it has 4 wires.   a black (-) a red (+) a yellow (tach) and a blue (PWM signal).   I tried swapping the yellow and blue, but as soon as i put the blue on the 3rd pin from the top, the fan shuts off all together.  Where as when i put the blue on the 4th pin, it works perfectly fine in reverse PWM function.  (antminer gets hotter, fan gets slower)  i even did some thing silly. i unplugged it from the network so the antminer stopped hashing and eventually the stock fan stopped spinning.  At this point, the Nidec Beta v was at Wide open 100% throttle!   Now, one thing that i wanted to mention was, the Nidec Beta V that is working perfectly fine ( normal PWM function) has the exact same model number and part number, but the color wires are different.  (it has black, red, blue, and green)  At first, i was sure that the green was the tach and the blue was the PWM signal, but then i found when i hooked it up that the green was actually the PWM and the blue was the tachometer.  But, all in all, it works great though.

With all the fans being sold on ebay and what not, it's hard to believe that I'm the only one that's ran into this problem.   The other question, i was wondering, when i shop for a "PWM" 4 wire fan, how would i know that its the regular pwm function and not the "reverse" pwm function?    And, if your really good, is there some kinda electronic component (like a transistor or inexpensive Integrated circuit) that will reverse these fan's reverse PWM function back to normal?  I would donate atleast a little BTC to one who could get me to the right answer!  Thanks again!

Hi everyone!  I purchased a Nidec Beta V VA450DC and installed it on one of my Ants.  It works great, and the pwm function works nice too  ( ie when the ant gets hot, it blows way harder thus cooling the antminer down)

So i bought 7 more of the Nidec beta V VA450DC and started installing them.  What i found is that when the antminer s1 gets hotter, the fan slows down?  it continues to do this untill the Antminer hits 60 degrees C and then the fan totally stops. If i manually cool the antminer, the fan will gradually get faster. Everyone of the New 7 Nidec fans is doing the same thing ( so its not just an oddity with one of them)

One thing i also noticed is, when i first turn on the antminer, the stock fan doesnt run, but the nidec runs at full speed.  It seems to me that the PWM function is working totally opposite of what its supposed to!!?!  I tested it and basically the cooler the antminer is, the faster the fan blows.  So, its totally inverse of what its supposed to be.  Amazingly , this exact same thing happened when i bought a Delta Fan as well.  I had to pull the PWM line off so now it blows full speed. 

The 7 that i bought are the same model number and everything as the nidec that works just right. Has anyone experienced this problem with certain PWM fans? Is there anything i can do to fix it?  Why is it totally opposite of what its supposed to do?