We checked the threshold of V1-33-48-R and found that the amplifier had a negative DC offset resulting in a lower real threshold, so we replaced this amplifier. Two amplifiers 776 will be seating at the RADCON shelf so that we can get them out of the hall an set their DC offsets.
N3-31L is noisy, signal at the output of the amplifier does has a weird shape ( maybe light leak ) resulting in multiple trigger on one pulse. So we left it this way. We might want to reduce a bit the HV on it if it is too troublesome.
The VETO amplifier NIM crate power supply was checked to be OK, I hope we
won't have to power cycle it too often.