Sound through headphones but not speaker

[dansor]

If you insert the headphones, you get sound, right?

Then, if you remove them, does the sound come out of the speaker after 5 seconds or so?

If audio is coming out the headphones, then I think it’s not a software issue. It could be something stuck in the headphone jack. Can you inspect that?  Connect/disconnect headphones a bunch of times in a row.

Yeah, I get sound through the headphones when I plug them in. 
The jack seems fine as far as I can tell. 
I stripped off the speaker shrink wrap and applied voltage directly, and the speaker crackles like I’d like expect. I don’t have anything else around to test the speaker. 

I also checked to voltage on the speaker pins, and there’s nothing. But I’m not sure if that’s because it’s gjust getting no signal due to the headphone jack misbehaving. 

I guess maybe the next logical step could be to despiser the jack?
I don’t want to destroy any warranty/exchange option if it came to that though. 

Are there any test points further up that might help to test?
My gut says it’s the jack, but I am not too knowledgeable in that area beyond it seems ok. 

I’ve tried to take a couple photos down the jack, but they turned out pretty useless ?