Did bitmain warranty explain the exact problem with the board before they fixed it? and how much did they charge?. I would also be interested in any information on repairers closer to the UK as I also have a dead board on my S9.

Surprisingly Bitmain responded quickly but unsurprisingly asked me to return the whole unit. They did offer to give me one of their coupons to cover the shipping costs. So basically they`ve sold me something that stopped working properly after only one day, well within the warranty period and expect me to pay shipping and repay import duties if it is returned to me, and it will only be returned if they deem it DOA. But I will get a coupon (value unspecified) to help buy another unit from them. What a joke!
 

As Bitmain are not going to respond until the 25th I pulled the board anyway. There`s no obvious problems on visual inspection. Which FETs do you you mean by "the high side ones"? There seem to be four on the back of the board two marked 6040 an two marked 8040.

Thanks for the offer, I think your in the U.S. so as i`m in the U.K. i`ll wait till I get a reply from Bitmain. I`ve asked them to replace just the board so I don`t have to return the whole unit. For some reason they offer this service for other miners but not the S9. If they won`t agree to that then I guess its going to be an attempt at repair. I have a heat gun and experience with soldering/desoldering components, assuming I can source those particular components here. I sill don`t get why  these boards fail so regularly, (I had the same problem with an S7)

Set up my new s9 yesterday with three 750w psu`s , one of the psu`s also powers the control board. Everything was running fine until I turned off the machine to tidy up some cables. When I powered it back up I noticed the middle hashing board was not working and the psu powering this board had stopped. I swapped around the psu`s and whichever psu is connected to the middle board it won`t run. Tried a reset to no effect. Its almost as if there`s a short on that board and the psu that is connected to it is shutting down to protect itself. Anyone else had this problem? I prefer to fix it myself rather than returning it to Bitmain.

Made the BCH payment to Bitmain five days ago but my order page is saying there`s an order due amount in red. Is this normal or is there something else I need to do? This is for January batch.

Don`t know which exchange your using. I used Cex.io, might be worth a look to see if there`s a limit or if you can do it in chunks.

I finally made the order The whole experience was a bit like being on a TV gameshow. Having failed to do it within the 30 minute time limit I decided to get my BCH together first. Bought BTC, transferred it to exchange, exchanged for BCH and went to Bitmain website (possibly the slowest site ever) to place order, in the meantime value of BCH dropped meaning the original price of 1.66 was now 1.88 BCH.  Back to square one and added more funds to place the order. Between waiting for transactions, confirmation emails and 2FA the whole process took over two hours Now all I have to do is wait till January.

Whats the easiest/quickest way to get BCH to make the purchase?

I`m at the pay order page and can see the BCH symbol but can`t see how to acually pay for the order even if I had BCH. I only have BTC in my wallet

Maybe there was a deal on, buy 1000 get 30 free! 

Block found at  2014-04-10 01:39:10 

As per subject. I put on a nice big antenna, went to network/scan and my router showed up on wwan with 98% signal strength. Clicked on add and save+apply. Disconnected the ethernet cable and the miner worked for a minute then stopped mining. Reconnected the ethernet cable and it started mining again.  Anyone been successful in configuring wifi that can tell me what i`m doing wrong.