What mistake did the previous technician make? Acorn 120 130 stairlift error repair diary.

What mistake did the previous technician make? Acorn 120 130 stairlift error repair diary.

An indication that the previous technician was not experienced with Acorn 120 or 130 repairs. Acorn 120 130 stairlift error repair diary. Stairlift not moving, no beeps, unresponsive.