If your Koss headphones are not working properly, there are a few things you can do to try to fix them.
How to Fix Koss Headphones
First, check to make sure the batteries are charged or replace them if necessary. If that does not work, try cleaning the headphone jack and plugging the headphones in again. You can also try resetting the headphones by holding down the power button for 10 seconds. Finally, if none of these solutions work, you may need to contact Koss customer service for further assistance.
Another Method:
If your Koss Bluetooth headphones are not working properly, there are a few things you can do to try and fix the issue. First, check to make sure that the headphones are properly plugged into the audio source.
If they appear to be plugged in correctly, try unplugging and re-plugging them several times. If this does not work, you may need to clean the headphone jack. Use a cotton swab dipped in rubbing alcohol to clean any dirt or debris from the jack.
You can also try plugging the headphones into another audio device to see if they work properly. If your best Koss headphones still are not working, they may need to be replaced.