FM-20: 充电器发出新的大声嗡嗡声或内部松动响声

FM-20 充电器发出新的大声嗡嗡声或内部松动响声

• Hollow or unstable surface amplifies normal vibration
• Internal magnetic component is vibrating excessively
• Impact loosened an internal mount or component
• Housing fit or foot support is no longer stable
• An internal electrical or mechanical fault is developing

1. The charger returns to normal quiet operation on a stable surface, or the abnormal-noise charger is removed from service.

1. If no hazard or damage exists, perform one supervised comparison with a room-temperature known-good pack and stop immediately if heat, odor, interruption, or visible change appears.
2. If the loud buzz or internal rattle remains new or abnormal, remove the charger from service for authorized evaluation or replacement.
3. Unplug the charger and remove the battery before evaluating the new noise; do not shake or open the housing.
4. Place the charger on a solid level surface and inspect for impact marks, loose feet, cracks, heat, odor, or debris; use FM-12, FM-15, FM-16, or FM-18 if present.

这是完整维修手册中所含故障排除指南的预览。

• DCB115出现新的响亮电流嗡嗡声或松动零件的响声，之前未出现。无烟、火花、燃烧气味、异常热量、液体、可见外壳裂纹或充电中断。

  DCB115 产生新的大声电气嗡嗡声或之前不存在的松动响声。请拔掉充电器电源并移除 battery，然后评估新的噪音；请勿摇晃或打开外壳。

• root cause analysis
• tools needed
• step-by-step repair procedure
• diagrams
• exploded views
• post-repair checks

公开页面仅显示预览。购买完整手册以下载全部维修步骤、图示和验证流程。