[justCNCit]

Hi

I bought the air cooled Hunyang combo from Ebay and it worked great at first.

I had it cutting a slab of wood and came back about 45 min later and the spindle was stopped. The wood was wrecked and the machine was moving.

Somewhere it was suggested to check the 4 poles on the spindle itself with an ohmeter, and I found that across ground to pins 1-2 was fine but pin 3 registered as an open circuit. I have gone to the technical support in Hong Kong where they said they would replace and sent them a video/pictures attached for them to make a decision.

Any guesses as to what happened?

When it was cutting normally and I went away it was drawing less than 2 amps and running 12,000 rpm.

Attachment 426908