Hello alsstair,
Apple Support Communities is a great place for help with your Beats Studio Buds, and we’re glad you were directed here from the Reset your Beats Studio Buds article. We’re also glad you were able to reset your Beats. That’s a great troubleshooting step!
From the description, it sounds as though the Beats may not be charging. In addition to the reset, have you verified the earbuds are seated properly in the charging case, and have you tried charging with a different cable and power source? If not, try those steps next. You can also find these steps in the If you can’t charge your Beats Studio Buds section of the following article.
Charge your Beats Studio Buds
If you continue to have issues after those steps, you’ll want to proceed with contacting Apple. You can find their contact details via the Get Support link.
Take care!