Pixel 3a earphone speaker replaced, not working.
My Pixel 3a got wet and the earpiece speaker started buzzing/humming/crackling, but it worked and I could hear through it! Everything else worked fine. I bought a replacement earpiece speaker and gasket from here (iFixit) and replaced/installed it. No particular issues. I reassembled after wiping all contacts, and was happy not to hear the buzzing, then realized all I was hearing was the bottom speaker (music or phone). Everything else works fine, that is: proximity sensor, front camera (nothing blocked) headphones (bluetooth and wired) - so it’s not a signal problem, all screen functions. I researched and tried all the fixes I could find. Restart, full Shutdown and restart, hearing aid not on, balance centered in Accessibility. I made SURE the gold spring contacts were oriented properly so that they would touch the 2 gold contacts on the mid-plate. I pressed to ensure the speaker was well in it's recess and even gave an extra squeeze above the speaker when reassembled (to help ensure the gold springs would make contact. I double checked the anti-static packages and they were labled with the correct parts (I even went to the trash, got them out and triple checked); so, even though the plastic earspeaker frame was a transluscent milky white and not black like all the ones I've seen shown, it had to be correct.
I'm experienced in disassembling and reassembling smartphones. Help would be appreciated.