i’ve had this problem for a while but it would fix itself, but now when i plug in my epiphone les paul special ii into my amp i get no sound. I checked all the basics and yes the amp is plugged in and on, the guitar volume is up, and the cable works with my acoustic-electric. I’m not an expert with guitars so i don’t know what i need to look for so i included the picture. I also unscrewed the input jack and the wire seemed to be attached. This is an inexpensive guitar so I don’t really want to pay to have it fixed. Any help is appreciated!
If you can use a soldering iron, re-make all the soldered joints. Hook up a temporary direct connection from a pickup to the output jack - or perhaps to a replacement output jack (no nead to mount it yet). Short out the volume and tone controls. You should see where the problem is.
If all this is over your head and you CAN'T use a soldering iron, you're not going to be able to fix it anyway.
I'd normally now advise about not knowing what you're doing... expensive repair... etc. But there's only a few components in there, all cheaply replacable. You can't do much harm. (Go on, prove me wrong :-) )