After the machine is installed, why does pushing into the sound channel result in noise?

After the hoist is installed, connecting the microphone and pushing it into the sound channel may result in noise or AC interference. First, check if the XLR connector's audio cable wiring connected to the microphone is correct and properly soldered. Ensure that both ends of the onsite laid audio cables to the mixer's XLR connectors are also properly soldered. Use balanced soldering methods for the XLR connectors. Typically, using balanced soldering for the connectors resolves noise issues.

Balanced Soldering Method for XLR Connectors: