Hi I also unpacked a brand new antminer s9 yesterday, 1 hashboard not showing.  Checked all cables and reloaded firmware, still not showing.  Using bitmains psu.

@btcurrencies.  I have 1 1000watt psu available. Can I try powering just the faulty hashboard with the 1000watt psu or will I need to purchase a 1600 watt.

Any suggestions to which 1600 watt power supply to purchase.

Thankyou in advance.