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    Feb 16 2012  1. Feb 10 2012. #1. Hi I am attempting to repair the micro usb connected that broke off my HTC Evo 4g mobile phone. When I opened it to look at the damage I discovered that the three inner pads have almost completely been lifted off the circuit board. The two outer pads look to be in good shape. Here are some pictures of what I m working with

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    A printed circuit board for multipurpose use having printed on one face a plurality of parallel circuit tracks each of which is provided along its length with a plurality of enlarged connection stations. The connection stations of the tracks are so placed along their respective tracks as to present a grid pattern along rectangular coordinates.

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    The pen has a nylon tip that enables fast manufacturing of the printed circuit boards. An example is its use on Copper printed circuit board Circuits can be drawn on plain copper laminate and then etched in Ferric Chloride or etchant solutions this is allowed to dry for few minutes then immerse the board in etching fluid until you confirm

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    PCB Rework and Repair Guide

    4.2.5 Conductor Repair Through Board Wire Method R MediumA C 4.2.6 Conductor Repair Inner Layer Method R F High E D 4.3.1 Circuit Cut Surface Circuits R F High A D 4.3.2 Circuit Cut Inner Layer Circuits R F High A D 4.3.3 Deleting Inner Layer Connection At A Plated Hole Drill Through R F High A D