Here are your parts
Replacement parts for FRIGIDAIRE LEQ1442ES0 Frigidaire/dryer | AppliancePartsPros.comHere is the tech sheet
http://manuals.frigidaire.com/prodinfo_pdf/Webster/134509400efsa.pdfAnd a manual
http://frigidaireservicetips.com/pdfs/487_2.pdfNote: I have never seen this so the following is just what I would do.
That you can restart the unit right after it shuts off is an important symptom.
Often dryer shut down is due to the motors internal thermal protect tripping but you would have to wait for the motor to cool down and the thermal protect to reset. I am assuming this is not the case.
Try to get into the diagnostics to see if the control board has stored an error code.
If no codes, the first thing I would do is check the power. (see below)
You may want to try different modes to see if it does it on all modes (auto and timed dry, with and without heat)
It could be that the board monitors the temperature and is shutting down/erroring out due to the no heat condition.
If power is good I would check the heating element, the hi-limit thermostat, the thermal limiter and the thermistor for resistance.
Try flipping the breaker off/on slowly a couple times, sometimes you can loose half the line without actually tripping the breaker.
If this does nothing, check the voltage at the plug
L1 to L2 should be 240 volts
L1 to Neutral and L2 to Neutral, both should be 120 volts.
If OK
Unplug the unit and check the wires at the terminal strip in the machine to make sure none are loose or burned out
If OK
Check the power at the terminal strip.
[COLOR="Red"]Be careful as 240 volts is lethal !!! [/COLOR]
If you do not own a meter, I would suggest you purchase a one. You can get a decent digital multimeter for under $20.00. You do not need fancy though it is nice if the leads are a couple feet long.
If it saves ordering one unnecessary part it has paid for itself and you end up owning a useful tool.
Most places will not let you return electrical parts so if you order it, you own it.
A couple things to watch when measuring ohms and continuity
1. Always remove power from the machine otherwise you could blow your meter.
2. Always disconnect at least one side of any device you are checking. This eliminates the possibility of measuring an alternate/parallel circuit path.
3. When checking for closed contacts and continuity use the lowest scale (Usually 200 ohms). Then try higher scales. This scale is 0 to 200 ohms so if the device you are measuring is 300 ohms this scale would show an open circuit which it is not, you are just measuring outside the scale's dynamic range.
There is a good STICKY at the start of this forum about it's use.
Sorry that I cannot be more helpful but hopefully the above will be of some use.