I was recently "gifted" an Apple IIe Platinum -- with a dead power supply, and every single slot empty.
The power supply had significant damage to it (likely from whoever owned it previously replacing the fuse on the AC side with a piece of 14-gauge wire) and had the 6-pin motherboard power plug clipped off.
I was able to cobble together a power supply to test the power to the board. Initial tests indicated that the board was doing positively nothing outside of the power and keyboard LEDs until I discovered that pin 1 of the 65C02 processor had been clipped off completely. Pin 2 had also been folded back underneath the chip socket.
I replaced the 65C02, and now, so long as the keyboard is plugged in and I do not have a monitor plugged in, I get a beep. But if I plug a monitor into the composite out, I get no beep and scrambled video (just lines, not characters).
If I leave the monitor unplugged, the keyboard doesn't appear to do anything (if I type, I get no response).
I've got very little idea of where to start with troubleshooting from here. Can anyone help with this?