AV receiver won't power on at all

Symptoms

• No lights or display at all
• Power button does nothing
• Briefly powers on then goes dark
• Standby light on but won't fully power up

Likely causes

• CommonPower outlet, cord, or strip issueA loose cord or dead outlet is the simplest and most common cause.
• CommonInternal fuse blownMany receivers have a user-accessible or internal fuse that can blow from a power surge or speaker short.
• PossibleLocked in protection mode from a prior faultSome units stay dark until unplugged and reset after tripping protection.
• Less commonFailed power supply componentInternal capacitor or transformer failure, more common in older units.

What to do

1. Confirm the outlet works by testing another device in it.
2. Try a different power cord if the receiver uses a detachable one.
3. Unplug for at least 60 seconds, then plug back in and try powering on.
4. Check the manual for a user-accessible fuse location and inspect it for a visibly broken filament (only if the manual documents this as user-serviceable).
5. Disconnect all speaker wires and try powering on again in case a short is preventing startup.
6. If it briefly flashes on and off, note the pattern (if any LED codes) for the manufacturer or technician.

Tools and parts

• Multimeter (optional, for fuse check)

When to call a pro

If a good outlet, cord, and disconnected speakers don't bring it back, an electronics repair technician should check the internal power supply.

Safety