Re: Vox mini 3 amp

I found myself in the same situation, my headphone jack works, but the speaker doesn't engage when I disconnect the headphones. I found the issue to be similar to what Tonedef identified, which is that the headphone jack has a weak internal connection to ground. I took the casing of, played with the jack a bit and got it to a point where the speaker and the headphones work... kind of. Now my issue is that the headphone jack is a bit loose internally so the headphone connection isn't very solid. I have to play with it to get audio in both left and right channels....