Almost certainly you have a dead hashboard. You can switch signal cables (for example 1 to 3 and 3 to 1) to rule out malfunction on control board. If the problem moves to different slot you'll know it's the hashboard.

Unfortunately for warranty repair you need to ship the entire miner to Bitmain, if you still are under warranty period.

Sold out, thanks for good trade to Jesse again.

This time I got some scammers trying to get me to send the coupons first. Be careful out there. 

Aaaaand it's gone. Thanks to buyers and good luck mining!

Jesse bought all remaining 420$, 220$ and 200$ coupons, excellent buyer and a nice guy. I'll leave the prices visible for reference.

I bundled the remaining 100$ coupons to one batch, let me know if you are interested.

Sold most of the coupons now, first post updated with availability.

Thanks to all trading partners so far, I have been pleasantly surprised how nice and trustworthy people there is on this forum. 

How long has the RMA repair process been lately at Hong Kong worldwide repail facility? I have few S9s with dead hashboards, but I am not too eager to ship the entire units for extended period of time.

What PSU you are planning to run with this miner? I have an extra APW3++ for it, but it has such low power consumption that cheapish ATX PSUs should work out fine too. By cheap I don't mean bad quality one, but PSUs in 600-700W range are probably cheaper than APW3++ with shipping, taxes etc. Lower power ones don't necessarily have enough PCIe connectors.

First post is up to date with to coupons still available. Easiest way to discuss is if you get in touch with me via email nennendude@gmail.com, I'll be available for a chat too in Google hangouts with that address.

I am selling some 420 $ ones right now, but there is still coupons available in all categories.

I doubt that there is anything close to 50% of Z9, but I do have number of 420 $ coupons. Those are the largest I have heard of (and signal purchase of way too expensive miners early this year ).

Edit: Here is a link to my coupon sales thread if anyone is interested: https://bitcointalk.org/index.php?topic=3513251.0

Hi all,

I am selling following coupons:

2 x 250 $ for 70 USD / pcs (valid 15/7/2018) Sold out
15 x 420 $ for 160 USD / pcs (valid 30/6/2018) Sold out
15 x 220 $ for 60 USD / pcs  (valid 10/6/2018) Sold out
15 x 200 $ for 44.50 USD / pcs (valid 1/6/2018) Sold out
35 x 100 $ bundle for 50 USD (valid 1/6/2018) Sold out

Paypal USD or BTC/LTC/BCH equivalent is accepted forms of payment.

Coupons can be used 1 / miner and max 50% of miner price. This is current Bitmain terms and can be changed at any time. You need to have a Bitmain account to receive coupons. We can use Escrow via trusted member of this forum if you prefer, cost is on buyer. Offers to purchase larger batches and offers from trusted forum members will be prioritized due to convenience.

Contact me: nennendude@gmail.com or PM here.

Edit: Coupon availability updated

Edit 2: While I generally don't mind people making offers, the pricing above is currently not negotiable. Unless someone would like to buy most or all of them at one go, that would save me some work.

This is exactly USP of GPUs today and why they differ from ASICs. It will be probably challenging to make ASIC for some memory intensive algos like Neoscrypt. On the other hand Equihash was also supposed to be resistant, so we will see if they manage to crack the other ones too.

Just ordered one, with a coupon it was just too tempting to pass.  

I vote for this! Only slightly biased opinion as fellow Finn

Anyway the current Bitmain RMA strategy of shipping the whole unit back really makes it barely feasible to go through all that fuzz. Makes one wonder if it's the purpose of the whole thing. It seems ridiculous since the machine could operate without one hashboard perfectly fine in the meantime while everybody could save costs on the shipping. Kind of defeats the purpose of having modular units inside a machine.

Overall working close to your customers is well documented being the winning strategy and goes long way offsetting the other parameters pointing the other direction. If it's close enough I will rather go with Canaan next time for sure.

Cool report HagssFIN! It seems like Canaan does have a decent sized operation going on there. I've visited a few manufacturing plants in China during recent years for sure they know how to scale the business there. I can just imagine how massive the Bitmain operation must be. As a miner it is probably better not to know, would make me sick calculating the increasing BTC difficulty with each unit out of the door

Respect to Canaan for this kind of open support/marketing initiative. So far our farm is running only Bitmain units for past price / efficiency reasons, but Canaan is generating trust with their way of addressing the market. Lot of things could be improved, but hopefully they will fix the important parameters and push themselves into contention for the next investment we are going to make.

”More than one Coupon cannot be used for the purchase of one miner.” You can use as many coupons as you have miners in your order.

This looks like a proper scam, I suggest everybody to keep away from it unless it will be fixed. Tried it before reading this thread and it looks OK, but unapproved traffic is a definite deal breaker. Kinda obvious, but I will never roll out anything like this to my farm as there is good reliable options out there.

Note to dev: If you are interested gaining users with larger farms, you need to come clean right now. Otherwise good luck with whatever you're trying to pull with your secret data extraction.

Absolutely, their sales record has been excellent in a market with enormous demand for past few months.

However my point was that it is maybe not ideal to present a new product very similar to old one with such obvious image manipulation.

Haha, this is usually quite accurate statement! As pointed out above already, they did not really bother to ease the concerns with their product marketing. If they wanted to convince the customer base that this is a brand new product, they probably should have hired somebody with better Photoshop skills to do the sales images

https://imgur.com/a/9fC6D

Not stating anything about the product, but that looks just about as bad as it can.

Actually they do send APW3++ in boxes of 8 pcs / box. But other than that, it does not help to combine orders. Order miners first and then PSUs from earliest batch possible in separate order. You will avoid possible delay with PSU delivery, which is not a rare occurrence.