reminder: this radio booted up and transmitted before I shorted something near the PA.?
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update: new SMPSU boards arrived, I tested before installation, as per the wiki article, and they seem fine.
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I have the SMPSU boards and controls board installed into the main board.?
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With 7.5v, 200mA current-limited supply, I have zero current before pressing power on switch.
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Pressing the power switch briefly I get these on the back of the PCB:
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Board 1:
+12v: 6.0v
Vcc: 0v
adc5v: 0v
pwr_hold: 0.01v
Vin drops to 6.0v?
pwm_5v: 0.01v
pwr_on 0v
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board 2:
Vdd: 0.41
+12: 6.0v
lin_reg_en: 5.0v
pwm_3v3: 0v
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With all sub-boards removed, I'm seeing 1.3kOhm gnd->Vcc and 2Ohm (two ohms) gnd->Vdd, so those measurements have got worse.....
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I then took the SMPSUs out and re-tested, they still pass the tests from the wiki.
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Any ideas where to look?
Cheers
Dan
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