during runs 18182-18185 there were a lot of WFD overflows from 5B10-1.
Using the scope, we found the signal from 5B10-10 very bright, unstable
and filled spe.
Last Wednesday Fabrizio Cei and I replaced the bases (no HV) for
both PMTs with two new HV ones. Everything is fine now.
A presto,
Nicola