Tracing the Triad T2556

Tracing the Triad T2556

Previously, I talked about getting all of the muck removed. Now that the board is clean and doing something when power is applied, then next job is to figure out how everything connects together. My first thought was that I could use a continuity tester to see how traces connected components.

Previously, I talked about getting all of the muck removed. Now that the board is clean and doing something when power is applied, then next job is to figure out how everything connects together.

My first thought was that I could use a continuity tester to see how traces connected components. But there are a lot of traces, vias, and pins, and the act of having to flip the board over half a dozen times to follow each of the hundreds of paths would be a mammoth task.

I needed something better.

It turns out that trying to take a detailed and accurate picture of a 12"x15" surface is impossible with a cell phone.

Even if you have a tripod or something to keep the position of the camera stationary with respect to the subject, there are several problems with this approach. The lens has enough curvature that details at the edges are distorted, and furthest out traces are obscured by components that appear “in front” as well as “above” them. Without flat lighting, shadows also cause details to become obscured.

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