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The front camera line is broken can not be repaired, the camera line line is directly into the camera circuit, there is no way to replace the line alone, the line broken can only replace the entire camera. Generally, you can buy the original factory line to repair, however, many lenses due to limited mass production, the market simply can not buy the applicable line, at this time, this lens can only be scrapped.
In this case, you can go to professional maintenance personnel to deal with it, pay attention to replacement, try to solve it, you can repair it, replace it, and repair it can be used normally