One of my Apollo BTC's is misbehaving in a strange way. 

It's few years old, Model # : FBA2001 is written on the cover. Powered by an after-market PSU, which is good, 'cause the stock PSU would have issues with what it's doing....

No matter what command I use to start it (in a terminal on a Linux SBC and also on a Linux laptop), it will always run at full bore.

That means sucks 350W (measured at the wall) and produces around 3.5 TH/s, while the terminal claims this:

BOARDS SYS INFO (1 boards, 44 chips):
BRD  FOUND      REV   SPI     PWR  CHIPS  ON  ON_T  inOhOsc  OhOscN  OhOscT  OhN  OhT  loI  Tc  Th    T, C              TA  RevADC   OCP     HE  osc  OSChip               U, mV               I, mA  P, Wt
  0      1  BREV:20  1x 4  2x2x11     44   1     1        0       0       0    0    0   33   0   0   67  0    0( 0)  0( 0)    4007  0x00  0 (0)   50     N/A   U0: 9999 U1: 7662   I0:    8 I1: 8106     62

The command to start it was something like this:  sudo ./start_etc..etc..etc.sh

And the text in the .sh file is this (but with proper pool and user info):
./apollo-miner -host Xxxx -port xxxx -user Xxxxxx -pswd x -comport /dev/ttyACM0 -brd_ocp 50  -osc 50 -ao_mode 1 -fan_temp_low 65 -fan_temp_hi 70 -fan_pwm_low 1 -fan_pwm_hi 100

Any idea what has gotten into it and how to exorcise whatever is bedevilling it?