Troubleshooting Reference Hub

Use this hub when the system is already built and something is wrong. Start with the symptom, do the first three checks, then move into the deeper diagnostic page that matches the subsystem most likely at fault.

Tiny Version

Find the symptom, do the first safe check, and only then go deeper.

Builder Version

Start with the symptom board below: noise, power, amp state, or source/device. The goal is to narrow the fault fast without making the install less safe.

Stop Now Conditions

Stop and inspect power immediately if you have a burning smell, visible smoke, hot wiring, melted fuse holders, repeated blown fuses, or protect mode tied to obvious heat.

First Three Checks

1. Confirm what the symptom does: always on, RPM-related, source-specific, volume-related, or random.
2. Inspect power, ground, and protection status before moving signal wiring around.
3. Change one thing at a time and re-check so you know which move actually changed the problem.

Start Here

• Noise - Noise and Signal Symptom Quick Reference
• Power - Electrical and Power Symptom Quick Reference
• Amp state - Amplifier Won't Turn On, Amplifier in Protection Mode, Amplifier Runs Excessively Hot
• Source and device - Head Unit Won't Power On, Head Unit Resets on Bass Hits, Bluetooth Audio Drops or Stutters

Noise And Interference

• Alternator Whine
• Ignition / Engine Noise
• Amplifier Hiss
• Turn-On Thump / Pop

Electrical And Source Problems

• Repeatedly Blown Fuses
• Burning Smell from Wiring
• Headlights Dimming with Bass
• Parasitic Battery Drain