Samsung TV & Audio HW-S800B Ultra Slim 3.0 Channel 360 Watt Soundbar with Dolby Atmos and Bluetooth HDMI HANDSHAKE Error Fix: HDMI Handshake Failure — Signal Drops

Error code HDMI HANDSHAKE on the Samsung TV & Audio HW-S800B Ultra Slim 3.0 Channel 360 Watt Soundbar with Dolby Atmos and Bluetooth means: HDMI Handshake Failure — Signal Drops. Audio or video drops out momentarily then returns, typically when changing inputs, starting content, or switching between SDR and HDR. The HDMI handshake (authentication negotiation including HDCP, EDID, and CEC) is failing intermittently. Try a different HDMI cable — damaged pins or marginal cables cause handshake issues. Reduce HDMI chain length (remove splitters, switches). Disable and re-enable Anynet+/CEC. If using the soundbar as HDMI passthrough (source → soundbar HDMI IN → soundbar HDMI OUT → TV), the soundbar must support the video format being passed through. Update firmware on all devices in the HDMI chain.

The most successful fix is "Update Firmware and Remove HDMI Splitters or Switches" (medium difficulty, ~40 minutes). This fix costs nothing. 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 ("Update Firmware and Remove HDMI Splitters or Switches") is rated medium difficulty and takes about 40 minutes. Tools needed: Soundbar remote, TV remote, Source device remote, Wi-Fi network.

DIY cost: $0. Professional repair typically costs $100-$160. Many homeowners save money by trying the top-ranked community fix first.

The Samsung TV & Audio HW-S800B Ultra Slim 3.0 Channel 360 Watt Soundbar with Dolby Atmos and Bluetooth 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.

Error code HDMI HANDSHAKE also appears on 2 other Samsung TV & Audio models: HW-B650 3.0 Channel 330 Watt Soundbar with DTS Virtual:X and Bluetooth, HW-Q990C 11.1.4 Channel 546 Watt Soundbar with Dolby Atmos, DTS:X, and Wireless Subwoofer. The fix may vary by model, so check each model's specific page for tailored repair steps.