This instructable will show you how to disassemble the microphone Audio Technica AT2020USB+ to access the annoying blue led.
Step 1: Remove the Tape to Access the Screws Behind
Step 2: Remove the 3 Screws to Be Able to Pull of the Top Part of the Microphone
Step 3: Beware: There Is Only a Short Cable Inside, Don't Pull Too Hard
Step 4: Remove the Next 3 Skrews and Then Slightly Pull the Circuit Board Out
Its only glued to with a tape on the top, so you have to pull a bit harder to get this done.
Step 5: Bam, Now You Can Put Some Tape on the Led and Screw Everything Back Together
I used red tape to make the led light invisible to me.