It looks like the "sleeve" fell back into the amp. You may be able to snap it back in or you may have to replace the jack. Either way, you have to open up the amp to see so that would be your next step. If it's not obvious what happened once you get it open, post more pics for more helps.
That area of the amp should be relatively safe to work on, just don't lick anything.
Achtane wrote:FUZZ ALL DAY MAN FUZZ IS GOD ALL OTHER EFFECTS ARE SHIT
Caesar wrote:Dude, can you get the fuck out of my b/s/t thread with your bullshit.
PumpkinPieces wrote: This isn't America, this is I Love Fuzz.
Mudfuzz wrote:Remember when we were all just a bunch of weirdos that liked fucked up shit and not just a bunch of nerds buying bling to impress each other online?
Fuzz_Pi wrote:Thats odd tho i wonder how that happened on its own
It could have just gotten loose over time and finally fell in. I had it happen on Fender combo once - ended up just replacing the jack, because the one that was in it was a POS anyway.