LG S90QY: problems, parts and running costs
Checked: 2026-10-28
Summary
The LG S90QY typically experiences psychoacoustic surround sound limitations in open-plan spaces, connectivity issues, and limited sound customization options. Yearly running costs are minimal for electricity. It represents excellent value at $599 or less, very good value at $600-699, and fair value above $700.
Common problems and fixes
- Psychoacoustic surround sound limitations — owners report reduced effectiveness in open-plan living spaces; the fix involves proper room placement with walls within 1 meter of soundbar ends and standard 2.4m ceiling height; warranty does not cover room layout issues. [1]
- Connectivity issues — some users report inconsistent Wi-Fi and Bluetooth connections; workarounds include using wired HDMI/optical connections or rebooting the system; warranty covers manufacturing defects. [1]
- Limited sound customization — the system lacks a graphic equalizer for precise tuning; users rely on preset modes (AI, Cinema, Music, etc.) and basic bass/treble adjustments; this is a design limitation not covered by warranty. [1]
- Size compatibility issues — the 47.2-inch soundbar may be too wide for TV stands or obstruct bottom TV controls; solutions include wall mounting or using a larger entertainment center; warranty does not cover fitment issues. [1]
- Dolby Atmos effectiveness varies — effects are more forward-centric than immersive unless room meets specific psychoacoustic requirements; optimal placement requires proper room geometry; this is a performance characteristic not covered by warranty. [1]
Parts and consumables
- Wireless subwoofer (220W) — replacement cost not specified in sources; owners report the subwoofer rarely needs replacement under normal usage. [1]
- Front speakers (left/center/right at 45W/40W/45W) — individual speaker replacement not available; the entire soundbar unit would need replacement if speakers fail. [1]
- Surround speakers (left/right side-firing at 45W/45W) — part of the psychoacoustic system; no individual replacement parts available. [1]
- Up-firing center speakers (left/center/right at 45W/40W/45W) — part of the psychoacoustic system; no individual replacement parts available. [1]
- HDMI cable — replacement cost varies by store and quality; owners may need to replace if damaged. [1]
- Wall mounting brackets — included with the system; replacement cost not specified; typically included with new units. [1]
Yearly running cost
Electricity consumption is the main ongoing cost. The system has a total power output of 570W, but actual power draw is lower during normal operation. No subscription fees or mandatory consumables are required for basic functionality.
When it is a good buy
At <= $599: Excellent value for a premium 5.1.3-channel system with wireless subwoofer and extensive connectivity. This represents significant savings over the original MSRP.
$600-699: Very good value, especially for buyers seeking high-quality audio with minimal setup complexity and excellent dialogue reproduction.
$700-799: Fair value - the system delivers excellent performance but faces stronger competition from brands like Samsung and JBL at this price point.
$800+: Weak value - at this price, buyers should consider systems with discrete satellite speakers or more advanced room correction capabilities.
Better alternatives:
- Samsung HW-Q990B — better for true Dolby Atmos immersion and has more advanced room correction
- JBL Bar — better for larger rooms and has more powerful bass output
- Sony HT-A7000 — better for sound customization with built-in calibration and more EQ options