Hi all, I've just bought a 2nd hand Allen Bradley SLC 5/04 (1747-L541, SER 7) for demos and training. Whenever I power it up, the FLT light remains on steady, and it alternates between the BATT light and all lights (except RUN). The processor is non-responsive over RS232 in this state. What's weird is it that if I factory reset it I just get the FLT light as you would expect after a reset, and I can connect and download programs to it. Once I disconnect the power though and then turn it on again, I get the same problem. I've checked the battery and seem to be getting 3.1v. I don't get any battery warnings when it's running properly after a reset. Any help would be appreciated, Cheers