Samsung TV & Audio QN65Q80CAFXZA 65" Class Q80C QLED 4K Smart TV CAPACITOR FAIL Error Fix: Electrolytic Capacitor Failure

Error code CAPACITOR FAIL on the Samsung TV & Audio QN65Q80CAFXZA 65" Class Q80C QLED 4K Smart TV means: Electrolytic Capacitor Failure. Capacitors on power supply, main board, or LED driver develop bulging tops, leaks, or vented seals from aging, heat, and electrical stress. #1 component failure in TVs 3-8 years old and #1 cause of "won't turn on" issues. Visual inspection: healthy caps have flat tops. Bulging, domed, or leaking tops indicate failure. ESR meter can identify failing caps before visual symptoms. Replace with equal or higher voltage rating, identical capacitance, 105°C rated for high-heat areas.

The most successful fix is "Replace Electrolytic Capacitors on Power Supply and Main Board" (medium difficulty, ~90 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Replace Electrolytic Capacitors on Power Supply and Main Board") is rated medium difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Soldering iron, Desoldering pump, Multimeter, ESR meter.

DIY cost: $15-$25. Professional repair typically costs $150-$300. Many homeowners save money by trying the top-ranked community fix first.

The Samsung TV & Audio QN65Q80CAFXZA 65" Class Q80C QLED 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), ANYNET FAIL (Anynet+ (HDMI-CEC) Not Working), APP CRASH (App Freezes or Crashes), and 3 more.

Error code CAPACITOR FAIL also appears on 4 other Samsung TV & Audio models: QN55LS03BAFXZA 55" Class The Frame QLED 4K Smart TV, QN65QN90CAFXZA 65" Class QN90C Neo QLED 4K Smart TV, QN65S90CAFXZA 65" Class S90C OLED 4K Smart TV, UN55CU8000FXZA 55" Class CU8000 Crystal UHD 4K Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.