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CC2538EMK: CC2538EMK doesn't work with an SmartRF06EB

Part Number: CC2538EMK
Other Parts Discussed in Thread: CC2538, CC2538DK

I have got 12 CC2538EMs and when I plug the CC2538EM into the SmartRF06EB, I can see some info on the LCD and the power indicator will light on. But one CC2538EM doesn't work at all when I got it. When this CC2538EM is plugged into the SmartRF06EB and the power switch is turned on, the LCD doesn't show anything and the power indicator doesn't light on.