currentsound wrote:General troubleshooting would involve working out which component is not working.
For example, take the mic and cable from mic 1 and place it into channel 3 and then 4. If it works fine in channel 1 and two but not in 3 and 4, look to see if there are any settings that are different on the other channels such as phantom power, gain, fader level, EQs, etc..
If it sounds fine, then you know it's an issue with the mic or cable that you have in the other channels but again look to see what is different. Do they all need phantom power? Is phantom only on the other channels etc..
If you'd bothered to read the thread, you'd have found that all the mics are the same, they all need phantom power, yes they all work when only one is plugged in at a time and yes, all the channels can provide phantom power. And we've already worked out that the mixing desk can't provide enough phantom power for all 6 mics at once.