I have a York treadmill model t300+ diamond, my issue is that it runs erratically as soon as any load is put on the running belt ie: walking or running on it, I can switch it on perfectly, and adjust speed up and down all day and everything will still be running fine, but the moment I put my weight on it. It’ll start to slow down drastically(the DV180volt motor), then shortly afterwards it'll will burst into superfast speed then through an error on the upper display panel. So far I’ve replaced the two main HV Capacitors(400V 470uF) and cleaned the optical rpm sensor, and looked for dry soldering, so I am now at a loss as to what it could be, it is obviously some component on the board that adjusts the power when amps load increases on the board, but not knowing much about electronics I don’t know where to begin any input would be greatful, can post more detailed pictures if required of the PCB