heater

hi guys my heaters packed in, we were on the way bk from ameal and i had it on the 3rd stetting when there was a burning smell, and it cut out, 4 days later still worked but cut out on number 3 setting after a bit. now its totaly dead any ideas, and prices im looking at to fix it, thought maybe the motors burnt out???

It's possible the motors gone but it may be worth trying a different switch/checking the wiring just in case first.  If it's one of them the cost should be minimal and a second had blower wouldn't break the bank either!
HTH