LabVIEW Electrical Power Toolkit

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C-DAQ Short-Circuit between 5V and Ground in The USB Connector

My C-DAQ 8 Slots stop communicating with the computer and doesn't work anymore.
All The lights still working fine, but, My computer doesn't recognize.
When I was doing the Reverse Engineering, As show in the image below, the only 5V points that I found are the Highlighted spots.
While Measuring the continuity between 5V and Ground I found a short
In the second Highlighted square shown in the image, I believe it should have a diode for negative pulse protection, but it isn't there
According to my measures, The 5V from USB goes Straight to the MCU, Without any kind of protection, I would like to Known if anyone already had this kind of problem and if it's fixable.

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This Board is for questions relating to the Electrical Power Suite, a software toolkit for analyzing utilitiy grid power systems. Because it is highly specialized it gets very little traffic.

 

Please post your question to the Multifunction DAQ Board. You will likely get more views and a quicker repsonse. 

 

Lynn

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