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Dinva
12
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105
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1#
电梯直达
请教:贴片晶振5032外壳脱落，是什么原因导致的?发给用户之前测试过员是好的，用户装机测试时发现不成，才发现，这么矮的元件，旁边的元件又很高，除非故意破坏，否则也很难做成这种脱落，有人遇到过吗，欢盈经验分享，谢谢!
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FunnyNYPD
5
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439
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4#
Is it just one piece or many pieces happened on different boards?
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FunnyNYPD
5
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439
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7#
One of the possible reason, is the pick and place machine damaged the top cover during mounting process.
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FunnyNYPD
5
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439
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13#
>用洗板水清洗刷过，有影响吗? This can be the cause. Normally, if the top is attached by glue process, it is vey sensitive to the clean solvent. It shall be able to duplicate the same failure if you repeat the same process.
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FunnyNYPD
5
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439
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15#
>如果真是连洗板都不能碰，这种晶振也太娇气了 Well, this is not unusual at all. It heavily depends how the crystal is assembled. Many crystal cannot be washed especially the ultrasonic washing machine..
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发表于2017-06-03 18:07:17
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