Mackie ProFX16 Owner's Manual - Page 25

Appendix A: Service Information If you think your mixer has a problem, please check out the following troubleshooting tips and do your best to confirm the problem. Visit the Support section of our website (www.mackie.com) where you will find lots of useful information such as FAQs, documentation and any updated PC drivers etc. You may find the answer to the problem without having to send your mixer away. Noise • Turn the channel gains down, one by one. If the sound disappears, it's either that channel or whatever is plugged into it, so unplug whatever that is. If the noise disappears, it's from your whatever. Troubleshooting Power Bad Channel • Is the channel EQ set up nicely? • The power LED should come on if the mixer is connected to a suitable live AC mains outlet, and the power switch is on. Check to make sure that the power cord is securely plugged in. • Is the channel gain set correctly? • Is the channel level up enough? • Is the channel OL led on? • Is the channel pan set in the middle? • Try the same source signal in another channel, set up exactly like the suspect channel. • Is phantom power required for your microphone? Bad Output • Is the main level turned up? • Are the EQs set to reasonable levels? • Are any aux returns maxed out? • Unplug anything from the other line-level outputs, such as monitor out, just in case one of your external pieces has a problem. • Make sure that you are not overdriving your amplifiers. Check the loudspeaker average load impedance is not less than the minimum your amplifier can handle. Check the speaker wiring. Repair For warranty service, refer to the warranty information on page 35. Non-warranty service for Mackie products is available at a factory-authorized service center. To locate your nearest service center, visit www.mackie.com, click "Support" and select "Locate a Service Center." Service for Mackie products living outside the United States can be obtained through local dealers or distributors. If you do not have access to our website, you can call our Tech Support department at 1-800-898-3211, Monday-Friday during normal business hours, Pacific Time, to explain the problem. Tech Support will tell you where the nearest factory-authorized service center is located in your area. Owner's Manual 25