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Analog Discovery Studio


Leo_W

Question

After an ADS is powered on, the power light is normally on, but it cannot be recognized by the computer. After testing, the AD2 part can be used normally, and the usb port lacks 5V input. C23 measured down to 0V, the normal should be 5V, the usb port pin is also 0V. R22 measured only 2.07V, the normal is 3.3V, the device voltage around IC6 is abnormal, IC7 can only measure 2.07. Don't know where the 3.3V comes from?
And my IC3 is unusually hot, I suspect that the chip is short-circuited and burned out, but I lack the schematic, do not know the IC3 model?

image.png.5c4d64c7560e5654fc0578998039fe21.png

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