No sound via headphone jack or speaker: Stock JB
I picked up this phone from a frustrated buddy. It has no sound via headphone jack or speaker. I installed PowerAmp, so that I could tell if the headphone jack was detecting the headphones, and it is. It originally had GB, but I upgraded to JB stock via Kies and the problem persists. He did a factory reset before he gave it to me to tinker with.
Oddly enough, the in call ear speaker works fine! When I put the call on speakerphone, I get no audio, so I assume that uses the rear speaker also?
It's a really cool little phone, so I'd like to get it working. I'm guessing it's hardware, and I have no problem tearing down a phone (I've replaced glass before on numerous phones for friends). Any ideas where to start? I see both the headphone jack assembly and the lower speaker assemblies are both available reasonably. I'm inclined to just replace the rear speaker assembly, but kinda stumped as to why the headphone jack doesn't provide any audio, so maybe that's not the way to go. Anyone have any tips on where to start, based on my diagnosis?