Vocopro KJ7000 Pro Karaoke Mixer Parts Non-functioning. Everything but a fidgety green LeD and Input 4 work once you REPAIR the power stage. A short in a wall socket burnt out the transformer. Something else is damaged where it reroutes power back into the transformer currently. It will burn out again if you test it without repairing the issue again. Smells like electronic death. For parts, not working, or for repair.