The three channels that funnels the gas from burner to burner has corroded away. Can they be replaced?

It sounds like the burner has gotten restricted or clogged up. You'll need to break down the unit and clean it really well. Soak it apple cider or white vinegar over night if you have to. Use a brass brush that can be found at any auto store to remove any rust or clogs that you see. It's possible the gas control valve my have an issue as well. Most of those valves are really not very user serviceable. You may have to replace the valve. Although it's a long shot, the pilot may be too far away from the burner to ignite the gas. Check the distance on that.

Before you do anything else, take a pipe cleaner or a special brush on a flexible shaft that they sell in home stores and clean out the venturi tubes on all burners. Tiny spiders like to build nests in these tubes which can keep burners from working even when you try to start them with a handheld lighter. That can be dangerous, because it will build up the level of gas in the grill.

If that doesn't solve your problem, and your grill has electronic ignition with only one igniter for all the burners, then the transfer channel at the back of the burners is blocked with soot or corroded, and the flame from the burner with the igniter can't travel to the others. Clean or repair the channel.

Some grills have an igniter on each burner. In that case the burners that don't light may have broken or blocked igniters that you'll have to replace or clean. In the meantime, use one of those butane fireplace lighters to light the balky burners.

As long as the crossover channels do not leak at any point the gas should be getting to the other burners (assuming that the gas pressure is up to snuff). The next thing to check are the individual burner jet openings for clogs, and finally the flame spreaders should also be clean!

I can tell you on the LG dryers there is indeed a "reset" for the heating/burner funnel (as you obviously know) on the right hand side of the funnel, however they also incorporate a no reset "hi-limit thermostat" on the left side of the funnel. Once it is tripped it must be replaced.This is only present on the gas dryers.

If your unit has a separate gas valve for the oven burner, that would be my first guess. But I would also check to make sure that the thermocoupler was not corroded, coated or defective.

check the thermal fuse on the blower housing,if it shows good then possibly the gas valves are weak on the burner tube and wont let gas into the burner

there could be debris in the carryover tube..(the open channelled pipe that connects the three burners together) alignment is also critical,

Yes, the model and serial number is below the grill. My burners are also corroded. I have a natural gas with three burners, rotisarrie, smoker. It is also a 36". My # is ZGG36N31YSS. I have seen the YSS be CSS for propane grills. Hope this information helps :) If it does, I have found two sites with the burners; partsadvantage.com and appliance-parts-warehouse.com.

Run around $120 for one burner :(

Empire faw 40 makes a loud bang when starting up. There are three burners. The pilot light is on one burner. When the furnace starts, gas is lit on that burner and the flame is passed on to the other burners by a small channel that can get stopped up. You just have to remove the burners and clean the channel with a small file, like on a finger nail clipper. This can be difficult due to the pilot assemble being attached with two bolts. The bolt on the right has to be removed with a short screw driver. You can not get a socket on it. After you remove it there is enough play to remove the bracket and gas burners.

Check the electrode.  That is the end at the burner.  It may be corroded and no longer creating a spark.