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XP7

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Post time 2015-10-30 19:23:52 | Show all posts |Read mode
XP7

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Post time 2015-12-16 08:35:08 | Show all posts
顾老师,有个老版本DAC为TC9237的爱华XP7,外接9V电源通电屏显示,灯亮,但是物镜聚焦幅度很小,光头在外圈不会归位,Q402发热很厉害。经排查CXA1272第14脚至LB8106的第33脚并无断路,D409和C407都无击穿短路,可以判定是LB8106损坏了么??
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 Author| Post time 2015-12-17 23:56:42 | Show all posts
爱人332681713 2015-12-16 08:35
顾老师,有个老版本DAC为TC9237的爱华XP7,外接9V电源通电屏显示,灯亮,但是物镜聚焦幅度很小,光头在外圈 ...

Did you replace all aging SMD capacitors and clean the PCB? The chips are seldom broken.
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Post time 2015-12-18 07:16:08 | Show all posts
这个版本的漏液电容基本都在音频部份,我觉得与驱动这部份没有多大关系,看了手册,Q402只是单一的去到了LB8106的22脚,不插上电机或把Q413去掉Q402的温度就很正常,因已排查了D409并无短路,与1272的通信也没问题,我就觉得LB8106的问题很大了,因为没有风枪我是很不愿意去换IC这样的事情,不得已还是换了试试,没想到真的是它,换了之后机器工作得很好,



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Cong!  Post time 2022-11-22 09:14
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 Author| Post time 2015-12-18 11:04:28 | Show all posts
Good job! What's your next target to conquer? Show your work here, thx s lot!
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Post time 2016-01-19 00:31:55 | Show all posts
老大好 爱人同志好
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Post time 2018-02-10 12:58:54 | Show all posts
Beautiful. Now I need one.
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Post time 2018-02-26 04:55:10 | Show all posts
well done
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Post time 2022-11-12 05:35:25 | Show all posts
顾老师,想请教下,我有个全贴片电容,无飞线版本的XP7,使用电池有点问题,问题描述如下:
1、机器放入电池无法开机,但插上电源后开机再拔掉电源,机器不会断电停止工作,按关机后再按play后能正常启动读碟,但是按关机后打开碟仓,再关碟仓按play,就无法启动。
2、机器每次插入电源屏幕背光灯和屏幕上面的一圈背光的都会闪一下。
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Post time 2022-11-12 06:43:22 | Show all posts
另外补充下,我机器所有贴片电容(除了中间那个330UF/6.3V的直插电解)都更换了
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