I have had no satisfaction from BitMain and have decided to give up trying - at least I'll save myself the cost of shipping the other blown board to them for them to ignore.

I got two new boards from the very satisfactory Centrix International. I also bought their panel kit - it looks very smart and my new S5 is cooler and quieter than before, even with the stock fan.

Now all I need is advice - I will trawl this BB for answers to:
1) What do I do with the new % fan speed option? Is it safe to drop it very low if the temp stays low?
2) How about controlling heat and noise by under-clocking (to keep the noise level down at night time)?
3) Will two of these be better than the stock fan: 2 x Scythe Ultra Kaze Fan 3000 rpm 120 x 120 x 38 mm? Can I run safely on one of these?
4) How far should I push the clock when nobody is in earshot and going to be annoyed by the noise? Is it just a matter of going as high as I can without passing 70 degrees?

If I can't find the answers on this BB but find them elsewhere I will update. If you know the answers please let me know.

Fingers crossed there will be no more blow-outs!

Sorry BitMain - 'support' is not the correct word for what you give us after you sell us your products.

Chuckie