Re: Troubleshooting Hella Turbo 12V Fan
The part that has failed in my several Hella fans is the small, slide-on connectors where the power wire attaches to the printed-circuit board. Soldering the wires directly to the board is a simple fix. There are two resistors on the board and I've had to replace the larger one (.5 ohm, 1 watt) in a couple of fans. After that, the brushes finally wear out and at that point you have to throw it away. I've also removed the whole motor assembly and used the frame to mount a 5" square computer fan. Noisier than the Hella and less air, but computer fans are about $5 on the surplus market.