so you get a tingling shock. Have you plumbed the machine next to a metal sink? If you touch the metal s/steel sink and metal drum as u unload the machine it is usually the sink is not earthed to copper tap pipes – fairly common that one can get around a roughly 70 to 100 volt jolt but less if touching paint work. Can also be earth detached from machine`s mains terminal block – does the machine`s cable look pulled as it disappears into the machine? .Or no earth wire connection in the plug or the wall socket. Points to check first.