How to tune the peavy guitar - Peavey Electronics Peavey Predator Plus EXP Guitar

You should contact Peavey Customer Service for the info. Here's their link- Peavey com

If this happens only when the guitar is plugged in, most likely there are two possibilities. The first, you have some issues with the electronics in the guitar OR are using an acoustic guitar witch has an extremely sensitive pickup that provides nothing but feedback. If this is happening with the guitar unplugged, there is a mountain of possibilities.

put a battery in your guitar. It goes in the space at the bottom, usually where you connect your cable to your amp.
Then hold the guitar as you usually would.
Look for a little board with buttons on the side of the guitar to turn on the tuner: )

1- check the outlet for power by plugging in a lamp or something
2- check the amps fuse. Most power amps have user replaceable glass fuses.

Mouser.com

I personally use Seymour Duncan Humbucker pickups, and have never been disappointed. You might want to take your guitar up to a music shop and try it on different amps to see if your amp is your problem, or if it is your guitar's pickups or wiring. You could also try adjusting the height of the pickups until the sound you are looking for is achieved. I have also had guitar cables make a big difference in the sound. Make sure you have a good set of cables, and you may want to adjust the EQ settings of your amp to make up what the guitar lacks.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

I think posting the wiring schematics is not legal. If it just does not work anymore you could try and look if the battery clip is oxidized and try to clean it.

Follow this diagram.

http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=hum_sing_sing_1vol_1tone_5w

http://www.tubesandmore.com/