中文
含义
音频功放故障。图像显示正常，但扬声器无声音输出、声音失真、音量异常小或有持续噪音，音频功放芯片工作异常。
常见原因
- 音频功放IC（如TPA3110/TAS5707）输出端短路或芯片损坏
- 功放供电电压异常或电源纹波干扰导致噪声
- 扬声器音圈阻抗不匹配或音圈碰边
- 主板上音频DAC输出信号异常或静音控制逻辑卡住
- 音频排线接触不良或扬声器接线端子松脱
自助排查
- 连接耳机或外接音响测试，若外接有声音则功放或扬声器部分故障
- 进入设置菜单检查音效模式、平衡、静音等设置是否正确
- 轻压扬声器锥盆检查有无擦圈感，若有则扬声器需更换
- 如外接也无声音，检查信号源设备音量设置是否过低
English
Meaning
Audio amplifier failure. Video displays normally but there is no sound, distorted audio, abnormally low volume, or persistent noise from the speakers due to amplifier IC malfunction.
Common Causes
- Damaged audio amplifier IC (e.g. TPA3110/TAS5707) with shorted outputs
- Noisy or out-of-range power supply voltage feeding the amplifier stage
- Speaker voice coil impedance mismatch or coil rubbing against the magnet
- Stuck audio mute logic or failed DAC output from the main chip
- Loose or corroded speaker wire connectors on the main board
Self-Check Steps
- Test with headphones or external speakers — if external audio works, the internal amp or speakers are the issue
- Check sound mode, balance, and mute settings in the on-screen menu
- Gently press the speaker cone to feel for rubbing — if present, replace the speaker
- If external audio is also silent, verify the source device volume is not set to zero