25m near and 20m rim TRH's have been reporting values of 0 for their fan currents.
I tried rserial to both TRHs and doing a ctrl-R, but that didn't help. The TRH's did not respond with their reboot message. The only effect was to stop the data, which only resumed after hitting CR several times.
I could power cycle the TRH at near with "eio 14 0", "eio 14 1" commands which worked, so that Ifan.25m.near is now about 40.
Power cycling the TRH at rim (eio 15 0/1) didn't work. That port must not be FET controlled.