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PDP-8/M (number 2) returns to life

My second PDP-8/M is just about back in the land of the living. I followed largely the same process as with the restoration of my first 8/M. Luckily this examples case wasn’t corroded and so I didn’t bother respraying and left it in original condition.
The main sticking point with getting this machine back was a… »

PDP-8/M Rebuild – part 4 – Reassembly and first power up

Having reinstalled the power supply into the chassis, the console was put back into slot 1 and carefully reassembled.
The minimum board set was then installed consisting of:

Slot2: M8330 KK8-E timings
Slot3: M8300 KK8-E major registers
Slot4: M8310 KK8-E major register control
Slot 20: M8320 KK8-E bus loads

The machine was then powered on and LEDs on the console sprung… »