I've had my epiphone and its played great for the 1 1/2 years i've been playing it. Lately when i plug in my guitar and start playing it, it doesn't work right away, I have to either shake the cable a bit or move my seat, its very annoying. Is this a cable issue or could there something wrong with my electronics.
It's probably the cable... to be safe, try your guitar with another cable that definitely works.
Your jack input might be a bit...errrmmm f***ed, however i would recommend trying a different cable b4 you go at your guitar with a screwdriver and a set of pliers.
if you dont have another cable and want to take a look.
just unscrew the input plate and carefully take out the jack, far enough to see if both wires are still well connected.
if they are, then it's probably the cable.