Table saw motor problems...capacitor?

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Forum topic by JSB posted 04-20-2013 02:04 AM 2919 views 0 times favorited 7 replies Add to Favorites Watch
View JSB's profile


737 posts in 2252 days

04-20-2013 02:04 AM

Topic tags/keywords: video

I have had this saw for less than 6 months and have had my fair share of complaints. Now, on a Friday when I have an entire weekend of shop time planned the saw acts up. I was ripping some pine 3/4 plywood when it just stopped mid cut. I noticed the built in breaker was tripped so I reset it and tried it again. It spins slowly for a couple revolutions and trips the safety breaker again. Is the capacitor dead? POOR QUALITY Porter Cable :(

Here’s a video!b3KLbab

-- Jay -

7 replies so far

View BurtC's profile


103 posts in 3304 days

#1 posted 04-20-2013 02:51 AM

Sounds like no starting windings, usually that is the centrifugal switch. Once motor gets up to speed it disengages voltage to starting windings. Try blowing thru vents at rear of motor. Maybe dust got in there..

View MrUnix's profile


7005 posts in 2373 days

#2 posted 04-20-2013 03:20 AM

Since it died while in use, I doubt it has anything to do with the start circuit. I’d start by seeing if it has a run capacitor and testing it with a multimeter..


-- Brad in FL - In Dog I trust... everything else is questionable

View tomd's profile


2170 posts in 3944 days

#3 posted 04-20-2013 03:32 AM

I agree with Burt, blow it out with compressed air and if possible lub the centrifugal switch.

-- Tom D

View NormG's profile


6265 posts in 3178 days

#4 posted 04-20-2013 03:38 AM

I hope you can get to Tuesday very soon. I agree use air to try and clean it out

-- Norman - I never never make a mistake, I just change the design.

View JSB's profile


737 posts in 2252 days

#5 posted 04-20-2013 06:30 PM

Thanks for the help guys. I ended up taking the entire motor apart. It was filled with very fine dust. Cleaned everything and it runs like a champ.

-- Jay -

View nobuckle's profile


1120 posts in 2935 days

#6 posted 04-20-2013 09:59 PM

Your new dust collection solution should help to prevent that. In theory anyway.

-- Doug - Make an effort to live by the slogan "We try harder"

View Roger's profile


20949 posts in 2978 days

#7 posted 04-21-2013 01:16 AM

Wow. Dust is a bad, bad thing I see. Glad you got it going. I was gonna say to just call PC with it still being new

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed.

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