By Chris Huff • March 25, 2019 Image courtesy of StockSnap Do you panic when you don’t get a signal from the stage? “Why can’t I hear the singer!?!” No more worries…this list explains the common line check problems and how you can fix them, meaning less time spent on line checks and more time making the band sound great! Doesn’t that sound better than “oh no, what do I do?” 1. Bad Cable Cables goes bad and if you don’t test your cables on a regular basis, then the issue will most likely show up during a line check. Or, worse, during the service! A standard issue cable tester can tell you when a cable has gone bad and the issue with the cable. Keep spare cables of all types because you will need them. On a related note, having the right tools like a line tester helps a lot. This article is provided by Behind The Mixer. 2. Bad Connection Connectors aren’t always pushed all the way. Typically I see this with guitar cables into the guitars or cables into guitar pedals and DI boxes. A simple reseating of the plug should resolve the problem. This goes for all cable connections including XLR, TR, and TRS. 3. Dead batteries These might be in an effects box or, where I usually see it, in the onboard EQ/Amp in an acoustic guitar. Keeping a few 9V batteries in the booth comes in handy in these situations. 4. Improper Wiring Was A plugged into B, not C? Following the signal from the source to the mixer, you should be able to find where the wires are plugged into the wrong place. Often times the issues is as simple as an input being plugged into an output. We, in the sound booth, see everything coming into the sound booth. Musicians, on the other hand, see wires coming to the stage. Fix the wiring and then educate the musicians if they do any of their own setup. 5. Poor Microphone Location While you might see a signal, if it’s not in the right location, you might not get enough signal for proper gain structure. You might not even get a signal because the microphone is too far away. I can see this point as more of a sound-check issue but I say the sooner you can resolve it, the better 6. Broken equipment Be it an active DI box, or a broken microphone, equipment will break and you have to be ready for it. Keeping extra equipment around does pay off. Replace any equipment that is “just hanging in” before it breaks. If it works “most of the time” then it’s unreliable and needs replacing. You don’t want to spend your time mending equipment each week when it could be better spent on the sound check. 7. Improperly Labeled Channel Of course there’s no signal, nothing is in that channel! Sometimes mistakes are our own fault. Just fix it and then ask the person on stage to try again. If they ask what was wrong, just say it was a board problem. 8. No Signal From The Guitarist / Bassist This generally happens when they turn down their volume pedal, have their setup set for tuning, or have done something else to disable their rig from sending a signal. Ask them to check their volume pedal and any effects board options like being set to tune or mute. The increase in use of digital effects pedals in the church environment means an increase in the likelihood of this issue occurring. 9. The Pastor Wants To Add A Video Hey, this stuff can fly in at any time. I’m just sayin’. . . 10. Bad Mixer Channel This is the most frustrating because it will result in money and probably require a substitute mixing board for a while. When it does happen, try another channel and mark the channel as bad. Definitely escalate this issue up the chain o’ command ASAP. I remember freaking out when I couldn’t get a signal from the stage. I thought there were so many possible problems and I had no idea where to start. It’s great being on the other side of that and knowing it’s usually a simple solution. And I think that’s how most audio problems should be seen. The solutions to most line check problems aren’t complex. However, knowing what can go wrong, you can now provide solutions much faster. Line check problems aren’t the end of the world so don’t treat them that way. Knowing what to expect, you can view these problems as speed bumps. What problems have you encountered during a line check? Let me know in the comments below! About Chris Chris Huff Writer/Teacher/Author, BehindTheMixer.com Chris Huff is a long-time practitioner of church sound and writes at Behind The Mixer, covering topics ranging from audio fundamentals to dealing with musicians – and everything in between. Comments Have something to say about this PSW content? Leave a comment! Cancel reply Scroll past the ”Post Comment” button below to view any existing comments. Your email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed. Chris Neale says Thanks Chris, Very helpful for instructing new help. Thanks for the tips on the ways not to freak out! Ken Schroeder says You forgot "Somebody moved something". I'll have 4 58's up on stage, turn your back for a second, and people move the mic's, and never straight back, You get a low signal because the mics are close, so now, what is exactly is wrong?? Stop, do the tap test. This happens at multiband shows a lot. Ton de Jager says 1. Don't forget to check if you have 48 Volt enabled on the channels that need it (might be condenser mics or active DI's). 2. Check for inserted effects. Remove them or check if the levels are correct. Terry Nelson says A very comprehensive list of possible problems and often forgotten! However, I would just say that this relates to audio problems in all areas of live sound. 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