中文
含义
OSD（屏幕菜单显示）处理异常。电视图像和声音正常，但设置菜单、音量条、频道信息等屏幕叠加显示异常或完全缺失。
常见原因
- OSD图层混合引擎处理异常——通常为SoC内部OSD渲染模块故障
- 系统缓存中OSD资源文件损坏导致菜单元素无法加载
- 分辨率或刷新率切换后OSD渲染比例未正确适配
- 第三方应用阻止了OSD图层叠加（如全屏游戏模式）
- 主芯片OSD通道DMA内存分配失败
自助排查
- 按下遥控器”菜单”或”主页”键，观察OSD内容是否部分显示
- 切换输入源后重新测试OSD功能是否恢复
- 恢复电视出厂设置，清除系统缓存数据
- 检查是否开启了”游戏模式”或”纯图像模式”——关闭后重试
- 若所有输入源均无OSD，怀疑SoC OSD模块故障需更换主板
English
Meaning
OSD (On-Screen Display) processing anomaly. The TV displays video and audio correctly, but the settings menu, volume bar, channel info, and other overlays are missing or garbled.
Common Causes
- SoC OSD blending engine malfunction preventing overlay rendering
- Corrupted OSD resource files in the system cache
- Improper OSD scaling after a resolution or refresh rate change
- Third-party application blocking OSD overlay (e.g., fullscreen game mode)
- Failed DMA memory allocation for the OSD channel in the main chipset
Self-Check Steps
- Press the “Menu” or “Home” button and observe if any OSD elements appear
- Switch to a different input source and re-test the OSD
- Perform a factory reset to clear the system cache and resource files
- Check if “Game Mode” or “Pure Picture Mode” is enabled — disable and retry
- If OSD is absent on all inputs, the SoC OSD module likely needs main board replacement