Sony Sony STR-AN1000 7.2-Channel AV Receiver with Dolby Atmos NO SOUND Error Fix: No Audio Output Despite Active Signal

Error code NO SOUND on the Sony Sony STR-AN1000 7.2-Channel AV Receiver with Dolby Atmos means: No Audio Output Despite Active Signal. The receiver shows an active input signal on the front panel display and the display appears to be operating normally, but no sound comes from any or some of the connected speakers. Check that the correct input source is selected on the receiver. Verify the volume is turned up and the receiver is not muted — press the Mute button on the remote. Confirm that the speaker configuration has been completed properly through the receiver Settings or Setup > Speaker Setup menu. Verify that speaker wires are securely connected at both the receiver speaker terminals and at each speaker — bare wire connections can loosen over time. Run the auto-calibration microphone setup to verify the receiver detects all connected speakers and measures correct distances and levels. Check if the audio output is set to headphones-only mode, which would mute the speaker outputs. If sound works on some channels but not others, check individual channel levels and the specific speaker wire connections for the silent channels.

The most successful fix is "Run Auto-Calibration and Test Individual Channels with Multimeter" (medium difficulty, ~45 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

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

Yes — the top-ranked community fix ("Run Auto-Calibration and Test Individual Channels with Multimeter") is rated medium difficulty and takes about 45 minutes. Tools needed: Multimeter, Calibration microphone (supplied).

DIY cost: $0. Professional repair typically costs $120-$180. 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.

Error code NO SOUND also appears on 4 other Sony models: Sony KD-43X85K 43-Inch 4K LED Smart TV, Sony XBR-65X950H 65-Inch 4K Full Array LED Smart TV, Sony XR-55X90K 55-Inch 4K Full Array LED BRAVIA XR Smart TV, Sony XR-65A80K 65-Inch 4K OLED BRAVIA XR Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.