Thanks for posting and welcome to Bose Community. Sorry to hear that you are having issues with your headphones and I would love to help you resolve this.
Let's start with ensuring that the headphones are running the latest software version by connecting them to a PC via a USB cable and heading to our Online Updater, then follow the onscreen instructions.
Once this is done we can attempt to reset the headphones by following these steps below:
Can you please also let me know if the issue occurs in all environments and levels of noise-canceling?
I look forward to hearing back from you with the result of these steps and if any other users are having a similar issue please do let us know.
Hector B - Community Support
I was able to resolve the left ear cup problem. I've been trying to update but so far have not been able to do it. I might not be following your directions to the tee. I'll try again and get back to you. Thank you for your advice and suggestion.
Apr 6, 2020
Sorry, I have not been able to resolve this issue. I have contacted bose and requested a new pair, since they broke within the 1 year waranty
Apr 30, 2020
If you have the receipt of where you bought it you can go to the store and ask for a new one if you have a warranty (Bose 700s have a 1-year warranty). I don't so I'll have to buy a new pair since Bose isn't responding and I have no way of actually showing them that I bought them other than that I have them. I might get them looked at by a repairman, but I don't know yet. Sorry that I can't be of more help, it's so stupid that they break after having paid so much for them and treating them well.
Thanks for your response. I finally got the left ear cup to work. I had inadvertently disconnected it on my laptop. The new thing is that no matter how much I charge the headphones, I never hear from the automated voice that the charge is full, even when the white light stops blinking.