Atomizers can be tricky sometimes. I've had quite a few spring back to life after they seemed dead. There is lots of info on ecf about diff ways to try and clean them out. Some folks like to wash them out with water, others with grain alcohol. Some boil them. Just try the search feature at the top of the page and do a little reading and see what lenghts you want to go
through to revive one. I personally throw them out after blowing them out dry doesn't do the trick. I like the hit that newer atty's give, and got tired of having a pile of so so atty's laying around. Another trick that I have tried and thought was ok is removing the bridge(microphone looking thingy) very carefully and dripping directly on the heating element. Once you do this though, you can no longer use carts as there is no way to wick
ejuice from the cart to the atomizer, so word of warning there. Also, the dryburn cleaning method works pretty good as long as you don't kill the atty in the process. Look down in there and get the atty red hot for a sec or two. Then try adding some drops of
ejuice and see if it's performance has changed any. Hope this helps out, good luck!!