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比亚迪速锐音响无声

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Post time: 2020-3-13 16:56:53
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13款高配比亚迪速锐,电瓶亏电,车主外接电瓶启动后音响播放正常但无声。测喇叭线均为10.2V,更换7388修复,提请同行注意此车拆掉主机一段时间后,无主机车子启动不了.

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Post time: 2020-3-16 10:50:43
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30分钟后就启动不了
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Post time: 2020-3-19 22:16:21
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还有这事,拆除音响车子打不着火吗?
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Post time: 7 day(s) ago
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没那事,这机器触摸屏和内屏爱坏,拆下待件4,5天,车主开着跑来跑去,啥都不耽误,你说打不着车的根据在哪,CAN吗,还是BCM,抑或发动机电脑,防盗状态吗。
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Post time: 7 day(s) ago
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题外话,修车载音响系统无声故障步骤本人经验,1 先测4组喇叭正常无打铁,2 测功放4,22脚的电平应该为高【STB ,MUTE】VCC直连电瓶,有温度功放基本正常,3 测数字音量控制芯片供电,一般是8-9V【这部分爱坏,导致功放块待机控制电平为低】4 用耳机监听数字音量控制输入端是否有声音,这几步基本搞定。
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