I recently aquired A Apple //e platinum . The case is in great condition no yellowing or scratches but I got A supprise. When you power it on it will not beep and junk is displayed on the screan and the keyboard will not respond but power light on keyboard and logicboard will come on. Could this be caused by A bad 65c02 processor or one of the Rom chips? I have A spair enhanced IIe logic board but I am not sure it will work with the extended platinum keyboard. Has aney one run across this problem before?