I think you have a mother board problem.
Enough is enough you need to talk to Frank, rapid style get him to get Ketron to accept the KB from you direct, arrange for Ketron to pay for the shipping both ways and get them to fix the KB for once and for all. You have been very patience and kept your head below the parapet and now itís time to get tough, itís the only way, this KB of yours is a Friday afternoon build and never was any good. Ketron apparently pride themselves in looking after their customers, Skude put it to the test and bypass Frank if you need to (but tell him) your guarantee is running out also, Skude act but act now. You are wasting your time involving AJ on this one, itís you Frank and Ketron.
Tyros 4/Pair SR 350/ PC with a i8 intel chip, XENYX 802, Ford Focus 2 litre/Tascam DR07/Brother printer/Designjet 500/ our Doris/5 Grandchildren/ white boxers short Kymart shipped over and Typhoo Tea Earl Grey