Your plant has several custom-built production machines that use various plug-in circuit boards. The standard practice has been to troubleshoot to the board level and then replace the entire board.

Soldering to a PC board can be tricky: Too much heat can make the copper trace lift right off the board substrate. Use a soldering pencil rated at 15-25 watts, no more. (Watch the video; story ...

So, I installed a new DC power jack on a laptop motherboard. Being the genius I am, I thought I would add a little epoxy around the jack on the top of the board to ensure it stayed put and didn't ...