6 components coveredField manual · TV
Sony BRAVIA X80K / X85K (and L-year successors): quick sheet
Covers: Sony BRAVIA 4K LED Google TVs: X80K and X85K (2022, e.g. KD-55X85K), with X80L/X85L (2023) as the following year. X85K: 120 Hz native on 55 in and up, X1 processor (Sony regional spec pages; retailer listings).
Sony's mainstream direct-LED LCD lines. X85K adds 120 Hz and HDMI 2.1 features over the X80K. Sony sets report faults by blinking the red front LED a set number of times; count the blinks before opening the set. Backlight strips and power board lead the repair list.
Safety first
- Unplug the set and wait several minutes before opening the back: the power-supply primary capacitors can hold a dangerous charge after unplugging.
- Power-supply and LED-driver checks with the set plugged in are caution work: insulated probes, one hand, no jewelry, and never touch the primary (hot) side.
- Lay the panel face-down only on a clean, padded, flat surface; open-cell panels crack from twisting or pressure on the glass.
- Two people for 55-inch and larger sets; lift by the frame, never by the screen.
- Use ESD protection when handling the main board and T-con; the flat flex cables tear easily.
How it works
A power board supplies the main board and LED drive; the main board runs Google TV and the X1 processor and drives the panel through the T-con.
If the main board detects a fault (power rail, backlight, panel) it shuts down and blinks the red LED in a repeating count. Published meanings of each count differ between sources, so treat the count as a pointer, not a verdict.
VRR/120 Hz work only on the HDMI 2.1-capable ports (HDMI 3 and 4 on this generation per Sony India's page).
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