John Hart
05-03-2010, 5:39 AM
Hi,
I have an old Craftsman 10" Table Saw that, while I was ripping some 2X4s, the blade got pinched and stopped. Before I could power down, the breaker blew. So, when I reset the breaker, now the motor won't start...it just groans a bit.
I assumed that the Starting Cap had failed, so I checked it and found that the bakelite covering had cracked and it had some obvious heat damage.
Now the weird part is...if I remove the drive belt, the motor starts and runs normally. I had an old motor sitting on the floor doing nothing, so I pulled its Starting Cap out and put it on the table saw...but had identical symptoms. I don't know what the ratings of that cap are, because there are no markings, but it was the same physical configuration...just slightly larger diameter.
Anyway...I assume that the cap I stuck on there is the wrong ratings....but thought that my symtoms would change....Am I wrong?
I ordered a new starting cap, but it won't be here for a week and I wanted to be sure that I haven't missed anything.
There's a 15 microfarad running cap as well, but it looks ok. So my question is....Should I just wait for the Starting Cap and find something else to do? Or should I continue troubleshooting because the problem might be somewhere else?
Oh yeah...dispite the appearance of the starting cap...it still produced a spark when I discharged it across its terminals.
Any help is appreciated.
I have an old Craftsman 10" Table Saw that, while I was ripping some 2X4s, the blade got pinched and stopped. Before I could power down, the breaker blew. So, when I reset the breaker, now the motor won't start...it just groans a bit.
I assumed that the Starting Cap had failed, so I checked it and found that the bakelite covering had cracked and it had some obvious heat damage.
Now the weird part is...if I remove the drive belt, the motor starts and runs normally. I had an old motor sitting on the floor doing nothing, so I pulled its Starting Cap out and put it on the table saw...but had identical symptoms. I don't know what the ratings of that cap are, because there are no markings, but it was the same physical configuration...just slightly larger diameter.
Anyway...I assume that the cap I stuck on there is the wrong ratings....but thought that my symtoms would change....Am I wrong?
I ordered a new starting cap, but it won't be here for a week and I wanted to be sure that I haven't missed anything.
There's a 15 microfarad running cap as well, but it looks ok. So my question is....Should I just wait for the Starting Cap and find something else to do? Or should I continue troubleshooting because the problem might be somewhere else?
Oh yeah...dispite the appearance of the starting cap...it still produced a spark when I discharged it across its terminals.
Any help is appreciated.