Ui12, Ui16 User Manual
APPENDIX 01: NO SOUND?
NO SOUND? A TROUBLESHOOTING GUIDE
APP01: NO SOUND?
A Troubleshooting Guide.
Oneofthemostcommonproblemsexperiencedwithmixingconsolesisndingthataninputisn’t
appearing at an output. There are many possible reasons for this, but the best way to troubleshoot it is
to go through the expected signal path and workout where the ‘break’ is...
It is also important that you double checking all routing, assignments, and Solo / Mute Group status.
You can check the exact audio path of any signal by referring to the input signal path diagram in
Section 2.3.
Are Solos inactive?
Check for the yellow ‘S’ is shown in the Master Channel display or a yellow active solo indicator in the
DASHBOARD page, If a channel is soloed then all other channels may be muted.
This shouldn’t affect a main Left/Right or Mono output unless the MASTER + HP solo mode is enabled in the
SETTINGS.
Clear all active Solos either individually, or by using CLEAR SOLO in the DASHBOARD screen.
Check The input!
The physical input should be correctly connected. The physical input numbers correspond to the input channel
numbers in the Ui Control Software.
Is there anything on the meters?
By checking the Input and Output path meters, you should be able to localise a problem to a large extent.
The Input channel metering comes after the Mic/Line input but before the rest of the Input Channel. Therefore, if the input signal is
valid, and you have applied enough Gain, you should see a level indication on the input meters.
Output Channel metering is tapped just before the physical output.
Are they ‘in phase’?
Phase is only likely to cause an issue if coherent signals are applied to more than one channel and they are both
routed the same way. For example, you might be using a test signal, or using two channels for the same signal.
You can check if phase is an issue by switching the Phase (GAIN page) on ONE of those channels. If the audio comes back, then look
for the cause of the phase issue - it may be that a balanced connection has been wired incorrectly, for example.
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