Burning plastic smell coming from new cooktop fan.

this is because the gas is on full before the oven lights
IT is an explosive situation and should be quickly corrected by an accredited gas fitter
the soot indicates an incorrect burn ratio and that will be the major part of the problem

Razor blade paint scraper at 45 degree angle, then use non-metallic dish scrubber with stove top cleaning product.

That is an obvious burned wire, or burned thermal cutoff etc

check the vent at the back something may have fell into the breather. something like a plastic seal off some food.

Hi Mike Plante, I read your problem and would be very appreciative if you can share the solution that you eventually found, as my LG unit has experienced this exact problem after the same repairs were made. Please post an additional comment on the website. Thanks, Jeff

A small crack, turns into a big crack, Short of ordering a new piece of glass, there is no "fix" sorry. YOu can continue to use it, but eventually it will run across the cook top, and then shatter the glass... Better be safe than sorry.

the smell should disappear when used a few times.

it sounds as if the thermostat is broke. it could be the two wires off the thermostat are after melting together. ( burning smell). the thermostat stops power going to fan when it sences below a certain degrees. but your one has been cut out of the circuit due to the two cables melting together. this means fan will constantly stay on. you need to find and replace thermostat and make sure no cables melted together. if they are then seperate and use insulating tape to re insulate.make sure circuit breaker is off while doind this

Something inside is short-circuited. All components look fine thans to burned fuse. Don't try it anymore with new fuses. You need to get a repairman to check it out.

great love it when people do this just commom sense most of the time