EmulatorII-list

Hi,

Last Saturday I picked up a semi-working EII. It powers up, but it won't boot. Even when a functional disk is inserted in the upper drive, it behaves as if there was no disk in the drive - The lcd says "insert disk" and the floppy lights alternating flashing. I know the floppies are good because they boot fine in my other functional EII. Anyone know of causes of this behavior and what to troubleshoot? 

Thanks a heap in advance!

Paulo