Samsung TV & Audio HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer ARC Error Fix: HDMI ARC Input Mode — Connection Issues

Error code ARC on the Samsung TV & Audio HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer means: HDMI ARC Input Mode — Connection Issues. Display shows "ARC" indicating HDMI ARC mode is active. If no audio: (1) connect HDMI cable to the port labeled "ARC" or "eARC" on both TV and soundbar, (2) enable CEC/Anynet+ on the TV: Settings → General → External Device Manager → Anynet+ (HDMI-CEC) → On, (3) on TV set Sound Output to "Receiver (HDMI)" or the soundbar name, (4) set TV Digital Output Audio Format to "PCM" for basic stereo or "Auto" / "Pass-through" for surround. Power cycle both devices: unplug soundbar 30 seconds, then TV 30 seconds, plug soundbar in first, then TV. Use a certified High Speed HDMI cable. For eARC (HW-S800B, HW-Q990C), use Ultra High Speed HDMI cable.

The most successful fix is "Inspect and Replace HDMI ARC Port or Cable Assembly" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$30. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Inspect and Replace HDMI ARC Port or Cable Assembly") is rated medium difficulty and takes about 45 minutes. Tools needed: T10 Torx screwdriver, Plastic pry tools, Multimeter.

DIY cost: $15-$30. Professional repair typically costs $120-$200. Many homeowners save money by trying the top-ranked community fix first.

The Samsung TV & Audio HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer has 8 other known error codes, including: ARC NO AUDIO (No Sound via HDMI ARC/eARC Connection), ATMOS PASSTHROUGH (Dolby Atmos Not Being Received from TV), AUDIO DROPOUT (Audio Drops Out Intermittently), AUTO STANDBY (Soundbar Auto Powers Off After 15-20 Minutes), BT (Bluetooth Mode Active), and 3 more.

Error code ARC also appears on 2 other Samsung TV & Audio models: HW-B650 3.0 Channel 330 Watt Soundbar with DTS Virtual:X and Bluetooth, HW-S800B Ultra Slim 3.0 Channel 360 Watt Soundbar with Dolby Atmos and Bluetooth. The fix may vary by model, so check each model's specific page for tailored repair steps.