Sony Sony STR-AN1000 7.2-Channel AV Receiver with Dolby Atmos PROTECT Error Fix: Protection Circuit Activated — Receiver Shuts Down

Error code PROTECT on the Sony Sony STR-AN1000 7.2-Channel AV Receiver with Dolby Atmos means: Protection Circuit Activated — Receiver Shuts Down. The receiver displays PROTECT or PROTECTOR on the front panel VFD display and shuts down. This is a real error message displayed by Sony AV receivers when the internal protection circuit detects a potentially damaging electrical condition. The most common cause is a short circuit in the speaker wiring — bare speaker wire strands touching each other at the binding post, a strand touching the speaker terminal ground, or a pinched wire behind furniture. Disconnect all speaker wires from the receiver terminals and power the receiver back on. If PROTECT clears with no speakers connected, reconnect speakers one pair at a time (starting with the front left and right) to identify which speaker connection is causing the fault. Also check that speaker impedance is not below the receiver minimum (typically 6 ohms per channel on the STR-AN1000). If PROTECT appears with no speakers connected at all, the internal amplifier circuitry has likely failed and the receiver requires professional repair.

The most successful fix is "Test and Replace Faulty Internal Amplifier Components" (hard difficulty, ~120 minutes). Estimated DIY cost: $0-$20. HomeMD has 2 community-ranked fixes for this error.

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Test and Replace Faulty Internal Amplifier Components") is rated hard difficulty and takes about 120 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Soldering iron, Desoldering pump, Magnifying glass.

DIY cost: $0-$20. Professional repair typically costs $250-$400. Many homeowners save money by trying the top-ranked community fix first.

The Sony Sony STR-AN1000 7.2-Channel AV Receiver with Dolby Atmos has 8 other known error codes, including: ARC FAIL (HDMI ARC Audio Not Working), BT PAIR FAIL (Bluetooth Pairing Failure), DECODE ERROR (Audio Format Not Supported / Decode Failure), FIRMWARE FAIL (Firmware Update Error), HDMI HANDSHAKE (HDMI Authentication / Handshake Failure), and 3 more.