My Hoover washing machine has failed a few times with no display and no action at all. Turning the mains off and on again has returned it to life. Today it failed again mid cycle so I removed the control board PCB and examined it carefully for obvious issues and dry joints / failed joints. All seemed good.
I put it back together agin and now, by CAREFULLY fiddling with the main control rotary knob that has 15 positions including the off position it once again came back to life. The two wire cable and two pin connectors are sound, low resistance and making good contact with the control board PCB and the tiny PCB of the control that I am assuming IS an encoder.
However mid cycle once again the display disappeared and it stopped. No coaxing it back to life at all now... The main knob has what looks like it may be a rotary encoder, with detents, but I think the detents are mechanical and external to the encoder itself. in a plastic housing that the encoder is held on to.
surprisingly to me, only two of the three pins on the encoder are used. How might this work? Is it likely to be a rotary encoder or something else, and is there a way to safely fool the control board to "do something -- anything in fact to prove this rotary device is the culprit? I will Google rotary encoders, but a brief look shows most have at least five contacts....
Thanks and a very happy Christmas and a healthy and prosperous New Year to all members.