After Monday night’s debate, Trump claimed his microphone was defective. “They gave me a defective mic,” Trump told a gaggle of reporters following the debate. “Did you notice that? My mic was defective within the room. I wonder, was that on purpose? Was that on purpose? But I had a mic that didn’t work properly.”
Unfortunately, I could hear him just fine.
I don't think it was the microphone that has a few loose wires.
Besides, they would never have done that. No chance.