I have a Kenmore dryer (model no. 110.96588210) in which I gradually
replaced every major part to the point it was running as new (heating
element, belt, support rollers, motor).

It was running great for several month (after the last repair - in
which I replaced the support rollers and the motor), but now it won't
heat... not only it runs cool, the control dial (that sets the
program) won't progress either.

I checked the heating element (about one year old) with an ohm meter
and it seems to be perfect (~10 ohms).

I now believe that the problem must be in one of the parts that I
*didn't* replace (amazing how the manufacturer programmed the machine
to be replaced after 10-12 years...). Probably something in the
control mechanism (or themocouple?).

My question is: how do I pinpoint the exact part that needs
replacement so that I can order it?

Thanks!
Sam