A colleague of mine came in with a broken microphone, which is part of a Lucky Voice karaoke set and retails for about £60.00 on Amazon. The microphone had worked pretty well, but recently had lost its ‘X-Factor’ somewhat.
The microphone is fairly standard fare and connects to a standard XLR plug and socket arrangement. As this part is usually under the most stress as the singer moves about, it seemed sensible to have a look at that first. Upon connection to my amp, there was a huge amount of crackling which seemed to coincide with cable movements at the microphone end. Swapping the lead for a known good one I had proved that the microphone was fine, but the lead not so fine.
Only one screw holds the plug together and straightaway, the problem presented itself.
The main core had detached from the connector, as the outer cable sheathing has come away from the XLR connector body clamp. Not ideal.
A quick strip back and solder job and the wires were connected back where they needed to be. A little dab of hot-melt glue on the cable grip and a re-tighten and the cable was not going to move anyway.
With the plug re-assembled and the screw put back, the microphone tested perfectly on the amp, ready for karaoke once more.
Cost of a new similar lead: £10, Cost of repair: 15 minutes, dab of glue and solder. Nice.