Samsung TV & Audio HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer ATMOS PASSTHROUGH Error Fix: Dolby Atmos Not Being Received from TV

Error code ATMOS PASSTHROUGH on the Samsung TV & Audio HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer means: Dolby Atmos Not Being Received from TV. The HW-Q990C supports Dolby Atmos but is not receiving Atmos audio from the TV. Requirements for Dolby Atmos passthrough: (1) eARC connection with Ultra High Speed HDMI cable — standard ARC cannot pass lossless Dolby TrueHD Atmos, (2) TV eARC enabled: Settings → Sound → Expert Settings → eARC → Auto, (3) TV Digital Output Audio Format set to "Pass-through" (NOT PCM, NOT Auto on some TVs), (4) content must be encoded in Dolby Atmos — check streaming app for Atmos badge, (5) streaming services require premium plan for Atmos (Netflix Premium, Disney+ with Atmos, Apple TV+). For lossy Dolby Digital+ Atmos (streaming), standard ARC can carry the signal. For lossless TrueHD Atmos (Blu-ray), eARC is mandatory. Verify Atmos: when receiving Atmos, the soundbar display or SmartThings should show "ATMOS" or "Dolby Atmos."

The most successful fix is "Inspect and Replace eARC HDMI Board or Internal Cable in Soundbar" (hard difficulty, ~60 minutes). Estimated DIY cost: $20-$40. 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 eARC HDMI Board or Internal Cable in Soundbar") is rated hard difficulty and takes about 60 minutes. Tools needed: T10 Torx screwdriver, Plastic pry tools, Multimeter.

DIY cost: $20-$40. Professional repair typically costs $150-$250. 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 (HDMI ARC Input Mode — Connection Issues), ARC NO AUDIO (No Sound via HDMI ARC/eARC Connection), AUDIO DROPOUT (Audio Drops Out Intermittently), AUTO STANDBY (Soundbar Auto Powers Off After 15-20 Minutes), BT (Bluetooth Mode Active), and 3 more.