[Bryan Herbst]

The best troubleshooting option is the same as with most electronics when you've reached this point- take it apart, break out the multimeter, and start probing. If you can locate the damaged component, get out your soldering iron and replace it.

In all reality, you probably won't be able to save your jag unless you have a skilled electronic engineer on your team. I would recommend buying a new jag. During the off season you could start fiddling with trying to fix the broken one. If you fix it, extra jag! If not, you at least had fun taking it apart.