Hey Talkbass. Had this account for a while but never really had much to post. Until now! My Marshall B25 MII (It's a combo amp) has recently stopped working unless I plug headphones into the headphone jack. If I don't do that, no sound comes from the amp at all, even when it's on with the volume at max and the headphones unplugged. I've tested my bass, cables and pedals and all of it works fine, so I know it's the amp itself. Searching online didn't really give me a concrete answer of what was wrong or how to fix it, I got everything from spray air into the jack to take the amp apart and resolder everything. Has anyone experienced this before and do they know how to fix it? This amp has been with me throughout my bass playing and it'd be a shame if I couldn't keep it up and running. Thanks in advance everyone.