"replacement because of dust"? brush it clean of blow the dust away with compressed air, they are not damaged.
The inductor is a standard Ferrite cored one, you would need to measure its inductance to find a replacement but the chances of it being faulty are almost zero.
If you mean the 'transformer on the right in the second picture, it looks like a transformer but it is actually a filter choke to reduce radiated interference down the power cord (black and white wires). Again, failure is extremely unlikely, I don't think I have ever seen a faulty one. Look on the web sites of TDK and Murata, they are the main manufacturers of these devices.
Brian.