Problems with backplane1. CCDs N1, N2, N3, N8, N9, N14, N15, N20 and N25 show no stars and saturated-like patterns. We noticed this after several minutes observing, but looking back at past images the problem existed even since afternoon calibrations. We first attempeted a SISPI restart which did not work. Marco was called and he identified a clock card may be damaged and needs to be changed. This is a procedure that needs to be done with care so after consultation with Esteban and Alistair, it was decided that the electronics team will do the change during daytime tomorrow. Thus, we are calling the night.