Dead pick-up

check it with your tongue to see if it's dead (the battery, that is)

that test never worked for me... No idea why

you put your tongue on the 2 pots and if you feel the electric current then it's not dead

I take it it you've checked your leads?

Check the battery, as Adam said. If it's not that, play around with the output, it may have a lose connection. Mess with the pots, it may just be dirt on them, causing intermittence. Same with the switch, if it has one. It's unlikely to be dirt if it's a well-played guitar, but you never know. If there is dirt on the pot/switch, keep moving them until it clears.

If all that fails, you'll need to check the wiring. Could be a lose connection along there or cold solder.
And if you can't find anything obviously wrong, take it to a tech.

I say if she's a noob on wireing, I suggest taking it to a tech just so you don't make things worse.

I say if she's a noob on wireing, I suggest taking it to a tech just so you don't make things worse.

Definitely. I'd still give it a once over though, check for obvious issues. But yeah, Grungie's right, if your not confident about wiring, don't mess with it.

And if you hear ticking, run for your life!

Of course since Adam lives in Israel, he knows a lot about bombs

And hummus

I never used to be a fan of it, but it's an acquired taste.