SmartScope - Debug checklist

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In case something happened to your SmartScope, you can send in your SmartScope for repair, or (since you're into electronics anyway) you might try to give it a shot yourself. This document gives you a starting point in pinpointing what might be the problem.

Checking for short-circuits

The first thing to check is whether some power rails might be shorted. This might happen when a component was exposed to excessive currents. Check whether none of the nets in the table below are connected to each other, by checking either the bottom-left or top-right part of the table below. Make sure you the image below to find out where to probe the nets.

GND 5V D3.3V_IO D3.0V D1.8V D1.2V NEG_1.1V
GND
5V
D3.3V_IO
D3.0V
D1.8V
D1.2V
NEG_1.1V

DebugPoints.png

Verifying supply rail voltages

Next, power the SmartScope and measure all voltages to see whether they're close enough to their expected value. Note: in the app, switch to Digital mode to power the D3.3V_IO net

Measured voltage
GND
5V
D3.3V_IO
D3.0V
D1.8V
D1.2V
NEG_1.1V
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