J. Kissel, P. Thomas Given that we've had so many examples of rocker switch death this evening (see LHO aLOG 20839), I was able to identify that my new(ish) warning message about this failure mode on the MEDM overview screen (see LHO aLOG 20281) had a bug. The MEDM logic was watching L2 for all three stages, L2, L1, and M0. I've committed the bug-fix to the SVN such that LLO can receive its benefits.
What is the MEDM Overview Screen? Is this the overall QUAD Overview? If so, where is the new(ish) warning message? Are you talking about the Guardian message window (upper right corner) on the QUAD overview?
On the top-level screen for each quad, you should see a red rectangle appear around the top, UIM, or PUM coil output filters that says "rocker switch death", as in this screenshot from Jeff's alog.