Do I need a new start capacitor?

[stewart]

Hi all
Happy New Year!
My Sip 10 inch cast iron table saw that has been so reliable for over 10 years, has developed a problem with starting. When I press the start button there is a humming sound from the saw and the blade attempts to move but never gets up to starting speed. With the switch then turned off, if I rotate the blade by hand ( I use a stick really!!!), it does then sometimes start and get up to speed slowly but there is a burning rubber smell - so I switch off immediately. I am no motor expert (or even amateur) but having researched this I think the start capacitor might have come to the end of its life. Before I buy a new one, though, (over £80 on Sip's site...) am I on the right track?

 

[NickWelford]

I know nothing, except that these things are pretty generic and if you can identify which one you need, they can be purchased for a fraction of that.

 

[woodpig]

It could be a start capacitor, have a look at it and see if it's obviously damaged, they often split open. If it is damaged any make of capacitor of the same type and spec should be fine. I bought one from Maplins for my belt and disc sander, cost about £8 I think. If it's not the capacitor it could be the start switch.

 

[stewart]

Thanks, Nick and Woodpig. I'll have a look at the capacitor and see if it looks damaged. Good place to start...
Thanks again.

 

[NazNomad]

Also, the bottom of the capacitor should be pretty flat. If it's 'blown' like an out-of-date yoghurt, that's another good sign that it's fubar.

 

[stewart]

Is there a red faced emoticon? [FLUSHED FACE] no need for a new capacitor...problem was a small piece of oak stuck between the drive belt and frame of saw...

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[stewart]

[/IMG]

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[Logger]

My start capacitor failed on my table saw recently and i replaced it with one from maplin for £8. However, my previous capacitor showed no sign of damage. It was just my first option to try to repair it, and as happened it worked and i have had no problem since (my saw is used daily so it has had a lot of use since the change).

Just to let you know if you are not sure. The capacitor from maplins has 4 connectors. You only need 2 connectors, there is a big line dividing the 2 sets of connectors. You must have one wire fitted above the line and one below. It makes no difference which way around they go, but you will get a big bang if you wire 2 above!

I got no instructions so i rang the manufacturer of the capacitor to get the above information.

Cheers

Nick

 

[NazNomad]

Is there a red faced emoticon? [FLUSHED FACE] no need for a new capacitor...problem was a small piece of oak stuck between the drive belt and frame of saw...

Easily done, and a cheap fix.

Anyone who says they've never done something similar is a liar (or has never done anything). :mrgreen:

 

[stewart]

Is there a red faced emoticon? [FLUSHED FACE] no need for a new capacitor...problem was a small piece of oak stuck between the drive belt and frame of saw...

Easily done, and a cheap fix.

Anyone who says they've never done something similar is a liar (or has never done anything). :mrgreen:

I know...my wife said that it had saved me £80...so what should I spend this saving on???

 

[NazNomad]

Spend 78 quid on women and drink, then waste the other 2 quid on tools.

 

[DiscoStu]

I'm not sure if want to spend it on a £78 woman, you know the old saying, you get what you pay for!


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