Have a 6 car group and every week or so one of the cars is sitting at bottom landing not responding, every time it has lost its floor table with no other faults. Today when I arrived on the job I seen I had no outputs on the pilot relay board and the msu board was not in sync with CPU and io board (flashing lights) which would not allow connection of service tool. This problem has me stumped. I have changed CPU boards, msu board, card rack was recently changed, ribbon cables to msu to pilot board. Today I changed the pilot board, just trying to figure why I'm loosing outputs and floor tables. If anyone has some info they could share I would appreciate it, also reasons as to why the tables are or could get lost.
Thank you
Nick