Can't smell it from here. But sorry to hear of your trouble. Presumably you were going to try Cheesy's suggestion with an import original.

You've had the PS2 chipped and I hope you have a good relationship with the fitter. But ifirst, take the cover off (he'll have to do this) and look for an obvious area or go to the place with the most burning smell. Also look for something that might have floated around, like a washer.

Keep us posted.