At a higher level of complexity, as on the board shown in this project, I decided there were too many tracks for hand tracing to be reliable, and used the graphical techniques described. The next "level" of complexity from a simple, drawable board, would probably be a good candidate for the tracing methods described in step 16 of this instructable, missing out all the image editing procedures, and modified accordingly. For complex boards, it is too easy to lose your place using this method. For simple boards, it is probably better to use pencil and paper to draw the board onto squared paper, replacing components with their symbols, and changing track crossing places to avoid components. Without the need to invent the process, things should progress more quickly. However, I believe the basic procedure is essentially correct for the majority of boards which are too complex to reliably hand trace. The steps presented here are not exact, and you will no doubt find your own way of working which is more effective in the case of any particular board. The process proved to be very long and painstaking, but also very rewarding. This project is a result of needing to service a domestic electronic item without being able to obtain a circuit diagram.
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