I have 2 issues with an S9 I bought from Ebay.
It seems to be working fine and I updated to latest firmware specifically to utilize the Enhanced Low Power Mode.
However, please see screenshot, latest firmware from Bitmain was installed, published date 2019-08-08, but I don't see Enhanced Low Power Mode, only Low Power mode.
Also what is strange is that in Miner status, Frequency (avg) for each hash board is showing 1824.96! So all 3 say 1824.96 but the total is correct and displaying 633.66. GH/S (ideal) is showing 13,107.00 for EACH hashboard, but the total is correct and showing 13,500 (13.5 T/hs)
GH/ (Realtime) is all correct.
Please see screenshots.
The S9 summary is correct and shows 13.6 Th/s and is giving accepted shares and seems to be working fine otherwise.
It is plugged into a 220-240V outlet.
https://i.imgur.com/MtvxrIQ.pnghttps://i.imgur.com/a6uFtpy.pngThanks for your help.