I agree with Hex, I doubt it is the board. try clearing DEC, M-1-5-4, also PF RAM M-1-5-1. If that doesn't work I would try what Hex says, recalculate the CRC in MCSS & OCSS. when you swapped I/O boards did you also swap the GECB?
Last edited by tayto; 03/31/26 01:53 AM.
