Sometimes fixing an electronic/electrical device can be very easy. It might be a blown fuse , burnt wire that needs to be replaced or loosen connection that needs to be tighten.
You can repair an electrical/electronic device even if you are not an electronic technician or professional.
If an electronic/electrical devices stops working, follow these easy steps to fix it:

1.Check the source of the power, confirm if there is flow of current in it. If there isn’t, fix it and try powering the device again. If that didn’t fix the device, follow the next step.

2.Check the plug of the device, if it is a fused plug; confirm if the fuse is still okay. If it is okay, calm down and just go to the next step.
3.Check the wire of the device to confirm if there is no break in it. If there is, change the wire but if there isn’t; move to the next step.

4.After trying all the aforementioned and the device didn’t work, you have to take one more action and that is take the device to a qualified electronic technician.

I hope that helps.