HY there i can see your post and i must say
You please follow below steps
Check Batteries: Ensure that the microphone's batteries are fresh, properly inserted, and not depleted. If the batteries are rechargeable, make sure they are fully charged.
Battery Compartment: Inspect the battery compartment for any signs of corrosion or damage. Clean the battery contacts if necessary and make sure they are making good contact with the batteries.
Thanks and regards
HenryFloyd