My little aquastream yellow and grey s board blew I shut down the system and bled it out then had a look at the board on the rear of the pump it The Eheim type pump. The board had indeed blew. I decided to unsolder the board and connected an isolate 12 v power supply to it and without the board it works. So does anyone think by running it on 12 volts will burn it out? I realise I will lose usb conection and flow rate and other things but I love the Eheim pumps they aren't the best looking but they last for years with parts readily available . So can I hook it up or not take the chance. I bought an ugly little EK pump to do for now but looking at it it wouldn't last long OR does anyone know where I can buy a board in the UK as all know Aquastream have a horrible habbit of writing and talking German and its so much hastle