My Ozy board seems to have failed. I only have the D12 led on and my computer does not see the USB device any more. It is TAPR built Rev B board. I have checked voltages on my LPU and on the Atlas bus and they all look OK. I have also tried plugging in an ATX power supply with the same results. Any ideas on where to start looking? Regards, John g0orx/n6lyt