The left front burner, which has a small burner and a large burner, the small part does not work. Do I need a coplete new burner?

The burner probably hes plugged holes for the gas to get through.
You can clean them out with a tooth pick or paper clip.

Your front burner is fine. Assuming you have an electric cooktop the problem is in the switch that controls that burner. The infinite control switch. Replace it.

You could have a clog in your gas line. Have the gas company come out to check the pressure.

first check the wiring to the burner itself you might have a burnt connection to the larger one or a bad receptacle if both are good then you would have to buy a new burner try allbrands appliance parts they seem to be cheaper

you need to check the wiring to that burner it appears that there has been a short to the burner

You need the switch for that burner. The contacts inside are stuck together. You will need to pull the unit and separate the glass from the lower body to access it. To get the right switch you need full model and serial number located on a plate at the bottom of the unit.

Your ability to perform this is dependent on how mechanical you are. The Whole unit must be removed from the counter opening and the base unscrewed from the glass, remove knobs before disassembling. For someone mechanical this is not difficult. De-energize whole unit first.

Once the two pieces are separated the remainder is mechanically easier. Disassemble the box on right containing the switches and replace the correct one. Reverse the process for reassembly. Good Luck

This is for the glass top units. well i'm not sure if your problem is with your large or small single burner or the large expandable burner. If it's the large or small single burner replace the burner and if it the expandable also replace the burner. If you have a coil burner replace the infinite switch. Good luck hope this helps you.

these are cartridge elements corrrect? try reversing the cartidges, now the front small will become the rear small . does it not work in this position? and the newly placed front burner work?? this will determine if the proble lies within the cartridge or the switches

Clean the gas nozzle w/small wire are located at the back of the gas cook top /shut off the gas clean small gas nozzle clog / w moisture /rust dust and any foreing material.