Sony BRAVIA 8 OLED (XR80, 2024): quick sheet

Covers: Sony BRAVIA 8 (2024) 4K OLED Google TVs: K-55XR80, K-65XR80, K-77XR80. The BRAVIA 8 II (2025) is a different QD-OLED platform; do not mix parts.

Cross-checkedBrands: Sony4 components

Sony's 2024 mainstream OLED: WOLED panel, XR processor, Google TV, 120 Hz. Only two of the four HDMI inputs are HDMI 2.1 (4K 120, VRR, ALLM), and one of those carries eARC. OLED call types: image retention, a console on the wrong input, and the usual power/main-board blocks. Deep diagnostics: see the OLED TV field service manual.

Safety first

Unplug and wait before opening.
OLED panels break if twisted; carry upright with two people.
Live tests on the power board are caution work.

How it works

OLED pixels make their own light; there is no backlight. A 'sound but black screen' on an OLED is not a backlight fault; it points to panel power, the main board or the panel timing electronics.

The power board feeds the main board (Google TV, HDMI, processing) and the panel electronics. Sony sets report many faults with a blinking front LED; count the blinks before opening.

OLED panels run maintenance (pixel refresh) cycles while in standby; unplugging the TV right after use can skip them.

Components & tests

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Official manufacturer documentation

Always confirm values against the tech sheet for the exact model.

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): Flat-panel TV mounted on a living room wall with the screen off by Daria Klet, Pexels License

Diagnostic guides for this appliance

Guide · TV

TVs: standby LED blink patterns, why they are model-specific, and how to use them

Some makers use the standby LED as a self-diagnosis output. Sony, for example, repeats a group of blinks with a pause, and the count names a fault area. The meaning of a count depends on the maker and the chassis, so one model's table does not apply to another. Samsung's support simply says that if the red light still blinks after a power cycle on a known-good outlet, the set needs service. Use the blink only to separate power-delivery problems from internal faults and to point to a board.

6 steps ~20 minmoderate

Guide · TV

TV antenna finds no channels (or loses channels after a scan)

Most antenna problems are setup and signal, not a bad tuner: wrong input or scan type, a loose or damaged coax, an unpowered amplifier, an antenna in a poor spot, a splitter that cuts the signal, or a signal so strong it overloads the tuner. Stations also move or change format, so a rescan is the first step any time channels disappear.

6 steps ~30 mineasy

Guide · TV

TV talks: a voice reads every menu or describes the show

This is an accessibility feature that was switched on, often by accident through a remote shortcut (holding Mute or Volume, or pressing Star several times). A voice reading menus is the screen reader (Voice Guide, Audio Guidance, Screen reader). A voice describing the show is audio description, which may be a TV setting or the streaming app's audio track. Nothing is broken.

5 steps ~10 mineasy

Other tvs manuals

Manual · TV

Samsung Crystal UHD CU8000 / DU7200 / DU8000 (2023-2024): quick sheet

Samsung Crystal UHD 4K LED sets one step above the CU7000: CU8000 (2023, e.g. UN55CU8000FXZA, UN65CU8000FXZA; 43-85 in), DU7200 (2024 retail-channel model, e.g. UN65DU7200) and DU8000 (2024, e.g. UN65DU8000FXZA). Year letter: C = 2023, D = 2024. The 85-inch CU8000 and DU8000 use a different 120 Hz panel with HDMI 2.1 features; do not treat them like the smaller sizes. The basic TU7000/CU7000 have their own sheet.

7 components6 common failuresSamsung

Manual · TV

Samsung Neo QLED QN85 / QN90 Mini-LED (B / C / D, 2022-2024): quick sheet

Samsung Neo QLED 4K mini-LED sets: QN90B/QN90C/QN90D and QN85B/QN85C/QN85D, e.g. QN65QN90CAFXZA, QN65QN90DAFXZA, QN55QN85DBFXZA. Year letter: B = 2022, C = 2023, D = 2024. QN90C sizes 43-85 in; QN90D 43-98 in; QN85C 43-85 in; QN85D 55-85 in. QN90DD / QN90CD are retailer variants of the same series (check the exact suffix before ordering parts).

7 components6 common failuresSamsung

Manual · TV

Samsung The Frame LS03 (LS03B / LS03C / LS03D): quick sheet

Samsung The Frame lifestyle TVs with matte screen and One Connect box: LS03B (2022), LS03C (2023), LS03D (2024), e.g. QN43LS03DAFXZA, QN55LS03DAFXZA, QN65LS03DAFXZA, QN75LS03DAFXZA. Sizes 32 in (Full HD) and 43-85 in (4K). 43 and 50 in are 60 Hz; 55 in and up are 120 Hz.

7 components6 common failuresSamsung