I have a 10 year old Delta 10″ radial arm saw that I use to cross cut boards to rough length before milling.  It is wired for 230V.  Last night I was cutting some 6/4 when the blade bound up at the edge of a knot, freezing. I cut off the saw within a few seconds, unplugged it and freed the wood from the blade.  I tried to restart it, but nothing happens- no sounds, movements etc.  There is a thermal overload protection so I left the saw to cool, but it still does not start, even after pushing the reset switch- which does not click.  I checked the panel and the breaker is fine, and I measure 240V at the saw switch (which I changed) with a voltmeter. The saw has occasionally bound up in the past, but it does not get much heavy use, so I’d expect the motor to take an occasional stress like this without failing.

Question is- is there anything else to check before buying a new motor?  I can’t find any reference to any built in circuit breaker in the motor itself. Can the thermal overload protection fail and need replacing? It is a Philips motor (single phase) that can be wired for either 120V or 230V.  Given how bulky the saw and arm are, I don’t really want to bring it back to a Delta service center if they are just going to replace the motor. It’d probably be simpler to just get a new motor and replace it myself.

Any suggestions?

Glaucon