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We put the flex cable on this repair fixture and grind it

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Place it smoothly

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Use a grinding pen to grind it

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When grinding,

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try to lay the grinding pen as flat as possible,

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otherwise, it is easy to damage the surrounding flex cables

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When grinding until it is about to touch the flex cable, reduce the speed

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If the speed is too fast, it will easily hurt the flex cable

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This circuit board is a multi-layer board

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Grind until you see tin spots, you can stop slowly