help with shop vac

ugabulldog · Jul 5, 2018

Won't turn on, I am testing switch for continuity and wanted to make sure I was doing it right. Using 200 ohms setting on mutli-meter: I tested cord first and it looked good. Below, with switch on: Double pole switch

First pic- I have one probe on black (from cord) and the other probe on red.
Second pic- One probe on white (from cord) and other probe on other red.
Third pic- I don't see fuse or anything else to check.

IF I am doing this correctly, I am thinking switch and cord are good, and motor is bad?

thanks

farmrbrown · Jul 5, 2018

You're checking it right.
Try checking continuity across the 2 motor leads (red/orange wires). Your windings look good but it only takes one break in it to be "broke".

ugabulldog · Jul 5, 2018

I checked continuity between red and orange wires at switch (I did not see a way to test wires at motor, could not reach them) and there is no continuity with switch on, bad motor right?

ugabulldog · Jul 5, 2018

Thanks, At least It gives me an excuse to go out and buy a bigger better one!

1948CaseVAI · Jul 28, 2018

You are exactly correct!!!! They are now pretty much dirt cheap, so to speak, and generally not worth tryng to fix.

NRA_guy · Jul 29, 2018

I ran into that. The motor had a "thermal fuse" in the winding. It was there to shut the motor down (permanently) if it overheated.

Actually, I think it was there to make me buy another vacuum cleaner after a few years.

The thermal fuse had gone bad. I removed it and wired across where it had been and it works fine.

Yeah, I know: It was there for my safety and if the motor is overloaded it could start a fire, etc.

help with shop vac

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