We turned off and removed the switch box between the MIR PSD and the respective power supply on the WI payload.
The MIR signals are now offline, and the damper's gain was set to 0 beforehand.
We will try to repair the switch box and reinstall it before the end of today's maintenance.
The switch box has been restored, the fault was simply a cable not well connected.
The behaviour of the MIR signals is identical to what it was before the intervention (fig.1 before, fig.2 after). We also restored the damper gain to its previous value.
The glitches observed on MIR PSDF in May (fig.3, 69083) are still there, although their shape is slightly different.
