Right now there is a mismatch between the MEDM HEPI screens and the model, more precisely in the BLND screen: three ON/OFF switches are still active but not displayed in the MEDM screen.
By default, the switches are OFF and the ouput of the BLND is 0 (see pictures attached).
This bug should disappeared in the last model version (we got rid of the switches). I'll try to put a WP and do the update this week.
For now, the quick solution is to use caput commands in the terminal. Example for HEPI-HAM3:
put the BLND L4C switche ON -> caput H1:HPI-HAM3_BLND_L4C_SWITCH 1
put the BLND IPS switche ON -> caput H1:HPI-HAM3_BLND_IPS_SWITCH 1
put the BLND BIAS switche ON -> caput H1:HPI-HAM3_BLND_BIAS_SWITCH 1