Antminer S9 not showing ASICs

[JonathanZacks]

Hi,

I really hope someone can assist me... I have the AntminerS9 which has stopped mining and in "Miner Status" no ASIC is showing up. I found a post about loading specific firmware, but in my stupidity and trying to fix the miner I installed the 2019 firmware and cant downgrade the firmware now. Below is the Kernel log, any advise will be greatly appreciated!!

Code:

bring_up_pcb_temp = -100
mining.subscribe:{"id": 0, "method": "mining.subscribe", "params": ["bmminer/2.0.0/Antminer S9/12500"]}
mining.subscribe:{"id": 1, "method": "mining.subscribe", "params": ["bmminer/2.0.0/Antminer S9/12500"]}
mining.subscribe:{"id": 2, "method": "mining.subscribe", "params": ["bmminer/2.0.0/Antminer S9/12500"]}
avg hash rate = 0.000000, ideal hash rate = 0
hash rate is low...
re_open_core enter
Before read Chain[J6] org chain_voltage_pic=91]
After read Chain[J6] new chain_voltage_pic=6 read pic=6
Before read Chain[J7] org chain_voltage_pic=6]
After read Chain[J7] new chain_voltage_pic=6 read pic=6
Before read Chain[J8] org chain_voltage_pic=91]
After read Chain[J8] new chain_voltage_pic=6 read pic=6
Chain[J6] has 0 asic
i = 5, retry_count = 0, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 1, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 2, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 3, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 4, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 5, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 6, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 7, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 8, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 9, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 10, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 11, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 12, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 13, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 14, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 15, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 16, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 17, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 18, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
i = 5, retry_count = 19, dev->chain_asic_num[i] = 0
retry Chain[J6] has 0 asic
Chain[J7] has 0 asic
i = 6, retry_count = 0, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 1, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 2, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 3, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 4, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 5, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 6, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 7, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 8, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 9, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 10, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 11, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 12, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 13, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 14, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 15, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 16, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 17, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 18, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
i = 6, retry_count = 19, dev->chain_asic_num[i] = 0
retry Chain[J7] has 0 asic
Chain[J8] has 0 asic
i = 7, retry_count = 0, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 1, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 2, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 3, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 4, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 5, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 6, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 7, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 8, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 9, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 10, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 11, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 12, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 13, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 14, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 15, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 16, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 17, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 18, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
i = 7, retry_count = 19, dev->chain_asic_num[i] = 0
retry Chain[J8] has 0 asic
miner total rate=0GH/s ideal_total_hash_rate = 0GH/s

[mikeywith]

This a common issue , if all 3 hash boards are not showing then it's likely the control board and not the hash boards them selves.

If you have another working miner, use it's control board to confirm that the hash boards are fine, and then start trouble shooting other stuff

Here are a few things you can start with.

1- Try a different PSU
2- Perform a reset using the 2 methods ( reset button and IP report)
3- flash the latest 2019 firmware
4-use an SD card to flash the 2018 firmware ( the one you found in that topic) or flash braiins os.

If all fails and you are certain the hash boards are fine, simply buy another control board.