If both pickups went out at the same time, it's probably the wiring in the guitar. Either a wire came lose or there is a short in the wire somewhere. You should be able to check yourself by removing the back panal (or pickguard) on the guitar. Once you remove that, you should be able to see all the wires and if they are connected. Check the piece where the guitar cable goes into the guitar, that's where the problem lies in most cases. If both wires are connected to that piece, check everything else to see if they are connected. If everything is connected, then the problem is probably a short in a wire somewhere. Your better of taking it to a guitar technician, and have them take a look at it. Don't mess with your pick-ups!! You will probably destroy them!!

It's probably not your pickups since they both went out at the same time. That pretty much points to wiring. Very easy to fix. The most you'll probably have to do is replace a wire. But anyways, if it turns out to be a short in one of the wires. The cause is from improperly turning on your equipment. Here's how you should do it to avoid such problems.

1. Make sure your volume knobs are all the way down on your amp and guitar.
2. Plug in your guitar to your amp.
3. Turn up your amp to a low volume.
4. Turn up your volume on your guitar.
5. Turn up your amp to the volume you want.