If your system suddenly goes quiet, distorted, or weird, 9 times out of 10 it’s a signal flow issue. The fastest way to fix it? Work the path step by step. Here’s the checklist I use: 1️⃣ Source – Is the mic/instrument actually working? Swap it out if unsure. 2️⃣ Cable/DI – Test with a different cable or DI box (bad cables = sneaky culprits). 3️⃣ Mixer Input – Check gain, mute, routing. Make sure the channel is actually ON. 4️⃣ Processing/Bus – Is it assigned to the right mix, bus, or subgroup? 5️⃣ Outputs – Check the main L/R or mix bus isn’t muted or turned down. 6️⃣ Amps/Speakers – Last stop. Make sure power amps or powered speakers are on and connected. ⚡ Pro tip: Always move in order—source → destination. Don’t skip around, or you’ll miss the problem. 👉 What’s the craziest signal flow issue you’ve run into during a service? Share your story—it might save someone else this Sunday. — Nate