hi there..if there is video and background audio coming out from the TV, and no voice recognition from the mic- then mic is the problem. I believed the problem is the "voice coil". This is a part that can be replaced- you can contact me and we can repair that.
two ways to check
remove the mic ball
the part which the mic ball is is covering is the voice coil.
try holding both terminals (black and white wire)- if there is feedback sound- it is open and need to be replaced
try using your tester- test the impedance- there should be 500- 600 ohms reading
(
[email protected] or customerservice @magicmic.com)