I’m on my third pair of Beats myself, each time it’s the left speaker that quits. I love them, but their speakers don’t exactly take a beating. It’s probably a goner but check out other Beats threads here on iFixit.
If they are less than a year old, you should be covered under warranty: [https://www.beatsbydre.com/support/service-warranty|https://www.beatsbydre.com/support/service-warranty]
If you are forced to shell out the cash for a new pair, do what I did:
# Buy the Beats on Amazon, they are cheaper
# Get a 2-year or 3-year electronics warranty (usually suggested when added to cart), it’s like $15 max.
# Because they usually only last 2-2.5 years, when they break, just file a claim with that warranty website. They either send you a new pair, OR, better yet, send you an Amazon gift card for the value of the headphones at the time or purchase. I just use that gift card and buy the new Beats.
Think smarter, not harder :P
-Alex