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All too typical of Chinese manufacturing. They use cheap materials for one small part that fails and makes the whole assembly useless.

I removed the board. It turns out that it was not the toroid coil. It was the two white things next to it (sorry, I don't know their proper name). One leg on each was broken. I was able to melt the solder, push out the broken pin, insert the broken end and resolder it. I gave it a quick test and...

Well it ran fine for three weeks. I noticed that it would shut off under a load a lot easier than before the repair. Tonight ran fine for a while then it started to shut off while making small cuts into 3/16" x 1/2" aluminum. Assuming it's the toroid coil again, does anyone know the specs on...

It was not because I was moving the head. I was only moving it about 0.050" at the time. I ohm tested the resistors and they were good. I sent the board off to olduhguy.com. He said "You had a broken toroid coil (factory problem)." I should get it back in a few days. I'll let you know if that...

My Harbor Freight 44991 Mini Mill stooped working on me. I was milling slots in 6061 and the head just slowed down and stopped. Now it will not start up again. When this happened, I'd just finished a cut and was lowering the head for the next pass. The mill is about 6 months old. I've been...