No audio left speaker, yes on bluetooth and 3.5mm logic board, or?

Hi 2014 Mid macbook pro noticed no audio from left speaker, tried headphones but none there, I tried all the basics of sys. prefs. quitting the audiocore, maintenance scripts, and finally started up from a backup to check, and then ran Disk Warrior. I then tested with bluetooth and heard stereo, and then plugged in with a 2nd headphone and hear sound from the jack. I have had battery issues since I bought an ifixit battery last year, I read one article where apple replaced the battery and speaker.

I’m running osx 10.12.6 wondering if anyone might know if the common issue would be a logic board or the actual speaker, or this battery issue.

Thanks to anyone able to offer any ideas…