LG Electric Range - Infinite switch burning up repeatedly, burner staying on high no matter what the setting
This can happen if the L1/L2 connections are swapped when a control/switch is replaced.  The element will work fine by itself.  Turn on another element at the same time that has the L1 connection to the other wire color, and the control will POP.  Both switches/elements will work separately.
The L1 tab of the switch is manually connected to the pilot when you activate the switch.  With the input wires swapped on one switch, you are putting L1/L2 together when both switches are turned on.
Both the switches that are connected to the same pilot light must have the same color wires connected to the same tabs, say red to L1 and black to L2.