Re: QMX+ failed with power issues on first power up
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Yes, some fine wires will be needed to probe L201.
The CLK signals should be 3.3V square waves with 50% duty cycle. In receive, CLK0 and CLK1 will both be at approximately the receive frequency but phase separated by 90 degrees. As something is loading the 3.3V supply, you will probably see a lower voltage.?
3.3V In transmit, CLK2 will be at the transmit frequency, also a square wave with a 50% duty cycle. Same comment. Use a dummy load,? don't blow up the TX.
I'm still thinking about what the hot components on the SMPS might be telling us.
JZ
On the measurement of L201, it appears to be under the 3.3 volt power supply.??
I assume that you mean for me to solder some tiny wires to L201 and replace the power supply, then make the voltage measurement.? Is that correct?
Also, where would I find a reference for what CLK0, CLK1, and CLK2 should be?
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