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Replacement parts for DLB1550Balad models | AppliancePartsPros.com

It is near impossible to get info on GE units, they like to keep that info a secret.

Looking at the parts I see 3 thermostat's but cannot tell which one does what. Item 315 and 316 in Section 3 and Item 507 in Section 4.
I would think that one will be the operating thermostat, one a thermal fuse and one a hi-limit thermostat.
Check them all with a meter. All should be 0 ohms at room temperature.
Also could the heating element is blown.

You said it overheated a couple times so it is importatant that you find the cause. If it was not a clogged vent system then I would also replace the operating thermostat if the thermal fuse is blown.

Also check for a grounded element. Remove the wires from the element (noting where they go) and then measure them with a meter, they are usually around 10 to 20 ohms. Then measure from each connector to thye case/frame all should be infinite ohms (open).

Could also be a switch but without a wiring diagram I cannot say which.

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.