Troubleshooting Guide
Problem | Check | Correction |
No sound | Is power switch on? | Turn power switch on. |
(no power light) | Is line cord connected to live power outlet? | Connect power cord to live outlet. |
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No sound (power light on) | Are MASTER and CHANNEL LEVEL controls | Adjust both MASTER and CHANNEL LEVEL |
| up? | controls upward to desired level. Check |
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| speaker connections. Turn mic switch on. |
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| Check mic or sound source connection. |
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System hum | Are all line cord ground connections made | Turn the volume down on each channel |
| properly on Messenger™ and any auxiliary | starting with channel 1, working through the |
| equipment connected to Messenger? | mixer channels to determine if the problem |
| Are all connections secure? | is coming from an external audio source, |
| Are all interconnect cables shielded, except | such as a malfunction in that source or a bad |
| recording. | |
| the speaker cables? | |
| We recommend that all units connected to | |
| Does the system hum when touching | |
| the Messenger be plugged into the same AC | |
| microphone? | |
| power strip. | |
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| Change the microphone cable and/or |
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| microphone. |
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Only one speaker works | Are speaker cable connectors secure? | Fully insert connector and/or swap speaker |
| Are both MASTER LEVEL controls up? | cables between left and right speakers and |
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| outputs to check for damaged cables. |
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Loud howling or squeal from speakers | If it goes away when the CHANNEL or | Reduce microphone volume. Reposition |
(known as "feedback" by audio professionals) | MASTER volume controls are lowered, it is | microphone behind or farther from speakers. |
| acoustic feedback. | Observe FLS light above EQ and reduce level |
| Refer to Avoiding Acoustic Feedback and | of that band. |
| Using Graphic EQ sections of this manual. |
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Sound is distorted | Is the CHANNEL LEVEL at a very high | Reduce CHANNEL LEVEL and increase |
| setting? | MASTER LEVEL. |
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