Built the cables to connect the boards and cleaned up the PCB where replacement parts go

CABLING NEEDED BETWEEN BOARDS

The four PCBs for this curve tracer are connected via a number of cables and wires. A few connectors such as the electrical power input use terminal blocks and there are three shielded cables running to the BNC connectors on the rear, but most use 2.54mm spaced connectors. 

I wired up all the two, three and four wire cables to the connectors, allowing enough room to attach and remove the connectors while servicing the curve tracer. The connectors are keyed so that they fit only in the proper orientation. 

CLEANED UP PADS FOR PARTS THAT ARE BEING REPLACED

I had removed all the ICs and diodes that I suspected after the reversed power incident, but there were still blobs of solder on the pads. To prepare for the new parts to be soldered easily, I used some solder wick to remove the excess solder and get everything clean and ready for installation. 

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