Howdy Pals.
So, I've recently finished a batch of 1/8" / 3.5mm pro sound mods on all of my CGBs, and they all came out great. I used an identical procedure on all of them, where the jack is just under the battery case and behind the speaker to the right.
Now, the issue I've just begun to have the other day is that the speaker on my first one just quit working in the middle of some composing. It was literally working perfectly, and then I plugged my headphones in. As soon as I unplugged them, the speaker didn't turn back on.
I took it back apart to check it out, but I don't see anything electromechanically wrong with the speaker—at first I'd thought the jack was putting pressure on it and might have damaged something, but I see no evidence of that.
Because it quit working when I plugged and unplugged headphones, I suspect something might be up with the switching jack. I cleaned it out with some rubbing alcohol to no avail.
The headphone out and the pro sound jack I've added both still work fine, but I'd really like to have the speaker back. Hearing your own tunes out of the tinny little thing still amuses me.
Anyway, I've been probing with my multimeter to look for bad connections, but I really don't know enough about the circuit's design to even know where to begin.
Any ideas? Has anyone had a similar problem and successfully fixed it?