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Re: 7x12 Motor Won't Turn On


Chris Albertson
 

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On Jun 12, 2024, at 6:56?PM, mike allen via groups.io <animal@...> wrote:

? ??? Is this the lathe? see page 39

??? animal

On 6/12/24 6:18 PM, Arthur Coe wrote:
Had a crash awhile back while using a milling bit on my Grizzly 7x12 mini lathe.? Motor stalled and fuse blew.? I put in a new fuse, but motor won't run.? Are there any other circuit breakers/fuses that could be the problem?? Or, am I looking at a blown motor?

If anything is ¡°blown¡± it is most likely one of the MOSFETs on the motor controller PCB and not the motor. ? It costs about a buck to replace if you can DIY, or more like $100 to have someone do it for you. ? So it might be work reading up and learning to diagnose this.

The first test I would do is to disconnect the motor and see if there is power coming out of the driver board. ?For that, you should replace the motor with some kind of dummy load and measure the voltage. ?If the power seems good, the motor is bad, but if the power is not good, it is one of the output transistors. ? They are cheap but you have to know what you are doing

There are a few other parts that can blow as a result of the fuse or mosfet blowing. ??

Or if you are EXCEPTIONALLY lucky, a loose connection.

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