Samsung TV & Audio QN65S90CAFXZA 65" Class S90C OLED 4K Smart TV PANEL NOISE Error Fix: QD-OLED Panel Buzzing or Crackling Noise

Error code PANEL NOISE on the Samsung TV & Audio QN65S90CAFXZA 65" Class S90C OLED 4K Smart TV means: QD-OLED Panel Buzzing or Crackling Noise. The OLED panel produces audible buzzing, humming, or crackling distinct from speakers. Sound comes from panel area and changes with on-screen brightness. Caused by electrical excitation of OLED materials and panel power delivery. More noticeable in quiet rooms, during HDR content, and at certain brightness levels. Reducing OLED brightness and disabling Peak Brightness/Brightness Boost reduces noise. If excessive (audible from normal viewing distance at normal volume), may indicate panel defect or power rail issue — contact Samsung for warranty evaluation. Not a speaker issue — cannot be resolved with audio settings.

The most successful fix is "Panel or Power Rail Repair by Samsung Authorized Technician" (hard difficulty, ~120 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

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

Yes — the top-ranked community fix ("Panel or Power Rail Repair by Samsung Authorized Technician") is rated hard difficulty and takes about 120 minutes. Tools needed: Professional diagnostic tools, Soldering station, Multimeter.

DIY cost: $0. Professional repair typically costs $300-$600. Many homeowners save money by trying the top-ranked community fix first.

The Samsung TV & Audio QN65S90CAFXZA 65" Class S90C OLED 4K Smart TV has 8 other known error codes, including: 2 BLINKS (Power Supply Board Fault), 5 BLINKS (LED Backlight / Driver Protection Shutdown), 6 BLINKS (Main Board / T-CON Communication Failure), ABL ISSUE (Automatic Brightness Limiter Reducing Brightness), ANYNET FAIL (Anynet+ (HDMI-CEC) Not Working), and 3 more.