Sony Sony XR-55X90K 55-Inch 4K Full Array LED BRAVIA XR Smart TV 5 BLINKS Error Fix: Standby LED Blinks 5 Times — T-Con / Panel Communication Error

Error code 5 BLINKS on the Sony Sony XR-55X90K 55-Inch 4K Full Array LED BRAVIA XR Smart TV means: Standby LED Blinks 5 Times — T-Con / Panel Communication Error. The standby LED blinks 5 times, pauses, then repeats. Five blinks typically indicates a fault in the Timing Controller (T-Con) board or a communication error between the main board and the LCD or OLED panel assembly. The T-Con board converts the digital video signal from the main board into the precise timing and voltage signals that drive each pixel on the display panel. A failed T-Con board, damaged or loose ribbon cables connecting the T-Con to the panel driver boards, or a failure in the panel itself can all trigger this code. The display may show a distorted image, colored lines, or a white screen briefly before the TV shuts down.

The most successful fix is "Replace T-Con Board and Inspect Panel Connections" (hard difficulty, ~90 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

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

Yes — the top-ranked community fix ("Replace T-Con Board and Inspect Panel Connections") is rated hard difficulty and takes about 90 minutes. Tools needed: Phillips #2 screwdriver, Plastic pry tool, Anti-static wrist strap.

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

The Sony Sony XR-55X90K 55-Inch 4K Full Array LED BRAVIA XR Smart TV has 8 other known error codes, including: 2 BLINKS (Standby LED Blinks 2 Times — Main Board / System Error), 3 BLINKS (Standby LED Blinks 3 Times — Backlight / DC Voltage Error), 4 BLINKS (Standby LED Blinks 4 Times — Power Supply / Temperature Protection), 6 BLINKS (Standby LED Blinks 6 Times — Backlight / LED Strip Failure), 7 BLINKS (Standby LED Blinks 7 Times — Thermal Protection Shutdown), and 3 more.

Error code 5 BLINKS also appears on 3 other Sony models: Sony KD-43X85K 43-Inch 4K LED Smart TV, Sony XBR-65X950H 65-Inch 4K Full Array LED Smart TV, Sony XR-65A80K 65-Inch 4K OLED BRAVIA XR Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.