Help please DEFT T30

[BTR]

Been a while since I posted nice to see the forum doing really well.
Yesterday I was cutting a piece off 18mm ply on my table saw a deft t30 I have had it since new a it has been very lightly used.
It turned on fine and run as usual no probs i finished the cut and turned it off then i went to turn it on again and it did not start up.
I pressed the start button and this time it started but very slowly and made a humming noise from the motor and it does not go up to full speed.
It sounds like the motor is not getting enough power so today I cleaned inside and out of motor and the cabinet but everything looks good any help and advice please.
I think it could be the on off switch I have attached some photos and a small clip of the problem.

 

[RobinBHM]

It sounds like a starting capacitor issue to me

 

[BTR]

Thasks for the quick reply there looks like there are two on this motor.

 

[BTR]

I am trying to put pics up but it is saying file is to big do you think it could be the on off switch.

 

[RobinBHM]

Im better with wood than electrics, hopefully an electrics whizz will be along soon.

I cant think a switch fault would allow the motor to hum but not start. My guess would be a switch would either allow current to flow not.

 

[Myfordman]

In order of probability the fault will 99% be

1) Start capacitor - this will be the electrically larger of the two. look for the number preceding MF, uF or MFD (all abbreviations for microfarad). Cheapish to buy on ebay - search on value MFD and motor run capacitor. Yes I know it is a start capacitor but sold as run ones are best. match the capacitance as close as you can and the same working voltage or higher NEVER lower.

2)Centrifugal switch - sometime inside the motor but more often behind the fan where it get covered in sawdust and just needs cleaning.

3)Worst, but thankfully pretty rare, is a failed starter winding which needs a replacement motor as rewinds are expensive unless you have a mate in the trade.

 

[BTR]

Thanks for the help lads going to get the start and run capacitor off and see if i can get any decent ones from RS electricals who are local to me.

 

[BTR]

Thanks lads replaced the start capacitor and back to normal runs better than before .