Quote from: Zelek Uther on March 17, 2015, 12:03:38 AM

Quote from: notthematrix on March 16, 2015, 12:26:12 AM

Quote from: Zelek Uther on March 16, 2015, 12:18:08 AM

Two weeks after delivery and I have finally opened the box of my bonus 2-for-1 Neptune.

Just to confirm: my 2-for-1 Neptune is a new machine. It isn't an old Neppy from the Datorhall, there is not a speck of dust.

Ironically, I might have been better off with an old Neppy from the Datorhall, because apparently the new fans aren't as good as the old ones. I don't know yet because I haven't powered it on.

One annoyance: one of the cubes is broken. The bolt that secures the heatsink to the case has sheared off from the case (leaving a hole in the case)... meaning that the heatsink is tipped over and not making contact with the ASIC.

Once I get some PSUs, I'll plug it in. I'm not buying new PSUs, I will finally switch off some old machines (including a Jupiter and an AntMiner S1) and will use those PSUs. The Jupiter has been running 24x7 since 25th October 2013... it was my first decent miner.

Replace the fan with theese http://www.noctua.at/main.php?show=productview&products_id=84&lng=en
put in fw 1.06s download it here
https://github.com/KnCMiner/images/raw/master/Neptune/neptune-1.06s.bin , get a propper PSU like the evga 1300 g2 supernova
if you do that you can undervolt it quite well so it uses about ~ 3.8 TH @ 1850 watt per miner.

Thanks for the tips. Undervolt to 3.8TH/s? My old Neppy only gives 3.4TH/s @ 1990W... are the bonus ones more efficient?

Also: Damn, my old Neppy controller "died" last night. The display screen comes on, but remains blank and the system doesn't boot up.

Hopefully it's just a software issue. Is there a way to recover using a micro-SD card or something?

Oke thats a known thing but for your not bonus neppy you can ask for a new beagle at support!
the beagle bone is the black print....
http://beagleboard.org/BLACK (if broken) ,,, yes you can recover with a sd micro sd card card...
thats easy ,,, unzip this file
this is a copy my server because could not find it on the knc pages.
imzip thison a micro SD put it in the little slot on the Beglebone ,,, disconect ALL conectors to the cubes..
start the begle bone it wil start yiou will see the light burn , first a blue one and when yoi see a flashing green one the flashing is finisched ,,, then remove sd card.
restart controler , and it will bootup if evrythiung went well
connect the cubes ,, you will find all cubes running on 50mhz.
now you upograde to 1.06s lasterst firmware.
that yiu can find here https://github.com/KnCMiner/images/raw/master/Neptune/neptune-1.06s.bin

found the knc support page http://www.kncminer.com/support/neptune-setup-and-firmware

Download the following file: http://www.kncminer.com/downloads/support/naptune/SD_Neptune_rc6.zip zip and follow the instructions below.

1) Copy the ZIP file to an SD card and unzip the content of the archive on to the micro SD card formatted with FAT file system.

2) Turn the miner off via the power supply off switch and disconnect from the wall.

3) Insert the micro SD with the recovery files on it in to the SD card slot on the controller board

4) Reconnect the power supply and turn the power on.

5) Please wait while internal MMC flash memory is reprogrammed there will be a sequence of LED as follows:

A bright white light will flash inside the miner once, then a blue light will come on for around 30 seconds. Once the MMC has been programmed a green light will flash constantly. It means that the procedure completed.

6) Turn the miner off again and disconnect from the wall.

7) Eject the micro SD card from the controller board.

Cool

Plug in all the cables that were unplugged and ensure that they are secured.

9) Reconnect the power supply and power on. The miner should then start from the on-board MMC flash with the software revision Neptune_rc6.

10) The LED screen should then display the IP address.

If this does not resolve your issue, contact support.

If it al worked you can upgrade the fw to 1.06s using my links and the normal upgrade menu.

good luck!