Here are your parts
Replacement parts for WHIRLPOOL LER7646EQ0 | AppliancePartsPros.com

Here is the wiring diagram
https://www.servicematters.com/d...0Sheet%20-%203401735.pdf

Could be your thermal fuse. The one on the blower assembly (Item 7, Section 3)

Unplug the unit and check it with a meter. Should be 0 ohms.

If you do not have a meter.
Unplug the unit
Short the wires that go to the fuse together.
Tape them up so they cannot short to anything.
Plug it in and give it a try.
If blown replace it ASAP as it is a critical safety device.

Clean and check that the blower wheel is OK
Also clean and check the vent system
Both the above are common causes for the fuse to blow.

Other common causes are the push to start contacts and the door switch.

Try activating the door switch manually so the light goes off and start it up.
If it starts you know that the switch is not closing when the door closes.
Do not let it run very long as you can blow a thermal fuse when the door is open. Also this does not totally remove the switch as the cause just because the light goes out does not tell you that the Normally Open contacts in the switch are closing.