Uzair Abu Bakar, Normally I’d say you could be lucky and the only thing you’d need to replace was a blown fuse. However, since you say you did smell burnt electronics, which is indicative of components frying and not a fuse, you’re probably looking at blown components and possibly traces.
You’ll need to open the device up in order to get access to the PCB (controller board) where the power comes in, and all boards as it sounds like this device might not have the necessary power protection circuitry.
Once you’ve taken out the board(s), inspect them very closely under high magnification to check what / where the damage is. At the same time, take some good quality and up close pictures (using a lot of lighting, a tripod, high F-stop (aperture) and long shutter speed), then update your question with those pictures, so we can see what you see. [guide|21499|Adding images to existing questions].
Bonus: If you take step by step pictures along with making good notes on the disassembly, make sure to write up a guide for the job here on iFixit so others may benefit from your experience.