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Jet table saw won’t start

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Forum topic by plav posted 09-16-2021 01:22 PM 342 views 0 times favorited 11 replies Add to Favorites Watch
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plav

4 posts in 35 days


09-16-2021 01:22 PM

New member, thanks in advance for any help!

Tried starting up my JET 1.75 HP cabinet saw after no use for a few weeks and the blade turned maybe a 1/2 inch and then nothing. There is no humming or burnt smell. I do recall that the last time I used it it seemed as though the blade would slip while ripping intermittently. Checked the belts and they appear to be fine. After reading about other’s issues, checked the starting capacitor and it’s fine. Did blow out the switches, capacitor housing and motor and still nothing. The motor appears to spin freely. The motor has been wired for 220 and has been trouble free for 20 years. Haven’t removed the motor cover yet to inspect the centrifugal switch. Anything else I should be on the lookout for?

Thanks,
Paul


11 replies so far

View Robert's profile

Robert

4734 posts in 2723 days


#1 posted 09-16-2021 01:40 PM

I would bet on the capacitor.

-- Everything is a prototype thats why its one of a kind!!

View Notw's profile

Notw

1097 posts in 2996 days


#2 posted 09-16-2021 02:16 PM

I have a Ridgid table saw so a totally different setup but mine has a built in breaker with a red push button to reset it. Also i would check the wiring connections, mine are housed in a small enclosure and when i bought the saw (used) it was full of saw dust.

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plav

4 posts in 35 days


#3 posted 09-16-2021 02:39 PM

I was hoping it was the start capacitor too, but it tested at 520mfd with labeling as 500mfd. No sign of leakage or swelling.
The capacitor housing and wiring box were full of sawdust too, but blew them all out and didn’t notice anything out of the ordinary.

View Bill_Steele's profile

Bill_Steele

777 posts in 2974 days


#4 posted 09-16-2021 07:37 PM

Are you getting power to the motor when you turn on the switch? I had a problem not too long ago with the switch on my Jet saw. I took the switch apart and saw that the contacts were damaged/broken—so I replaced the damaged part.

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plav

4 posts in 35 days


#5 posted 09-16-2021 07:46 PM

Hey Bill,
I checked continuity across the poles on the switch and they shorted just fine when the switch is turned on and opened when off

View DS's profile

DS

3953 posts in 3663 days


#6 posted 09-17-2021 05:31 PM

Maybe the in-rush current of the motor tripped the circuit breaker?
Seems that would present just as you described.

My $0.02

-- "Hard work is not defined by the difficulty of the task as much as a person's desire to perform it.", DS

View GR8HUNTER's profile

GR8HUNTER

8982 posts in 1955 days


#7 posted 09-17-2021 05:40 PM

maybe check the centrifugal switch on motor :<)))))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN :<))

View GregQ's profile

GregQ

2 posts in 32 days


#8 posted 09-18-2021 07:52 PM

Just out of curiosity, did you change the way you connected it? On top of everything else noted above, I once had a similar result when using a new extension cord on a reel. The inbuilt breaker on those things cannot handle much load, and in my case I discovered that after a half day of troubleshooting the saw.

View dbw's profile

dbw

626 posts in 2879 days


#9 posted 09-18-2021 09:45 PM

A co-worker of mine once said “the problem lies where the power dies”. Trace the flow of power with a voltmeter.

-- Woodworking is like a vicious cycle. The more tools you buy the more you find to buy.

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plav

4 posts in 35 days


#10 posted 09-19-2021 10:43 AM

Wise friend. Turned out to be a loose connection in a junction box feeding saw and DC. Figured since the DC worked it must have been a saw issue. Simplest solution is usually the most likely. Thanks for all the responses! Onto the next issue…

View GR8HUNTER's profile

GR8HUNTER

8982 posts in 1955 days


#11 posted 09-19-2021 02:05 PM



Wise friend. Turned out to be a loose connection in a junction box feeding saw and DC. Figured since the DC worked it must have been a saw issue. Simplest solution is usually the most likely. Thanks for all the responses! Onto the next issue…

- plav


glad its fixed :<))))))))))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN :<))

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