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how to repair multilayer PCB in first step?

First step to repair multilayer PCB preparing work.

Preparing work is very important to all repair multilayer PCB.
Most of repair workers will ask you many questions about your multilayer PCB board.
They want to obtain as much information as possible on the conductive and non-conductive layers before they start the repair.

what they can do after get multilayer PCB?

Most of people will answer as preparing working.
Yes, preparing work is normal answer for how to repair multilayer PCB.
What were the more detail things those workers can do.

David have learned that there were two things they do.
Locate and determine the coordinates where the repair is to be made.
Use films or master drawings on the board as needed.

If you have some question about the first step of the repair multilayer PCB, please mail to us, we are happy to answer it.
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