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QMX+ Build - No Power on Diagnostics screen (pressing T) #power #test #troubleshooting


 

I have corrected all the issues with my enameled torroid soldering joints, so those look reasonable now on all bands. That said, I have no power whatsoever when pressing "T" on the diagnostics screen.? I am using 3 cell LIPOs charged to 11.9vdc (checked after charging with multimeter) for power. T501 wound for 12v.??

- Initial startup was at 7v, just to be safe. No issues or magic smoke so slowly raised voltage to 12V with no issues. No pops or anything else.?

- Checked T507 by removing and testing, then reinstalling.

- Removed and rewound T501, RWTST, to eliminate concerns of over twisting the wires.?

- Rewound T401 and checked for continuity on the 3 pairs, then installed it.?

- T502 has continuity and the correct amount of wraps.?

- The dummyload I am using is one I purchased along with the kit. Assembly was enjoyable and it measures 49.5 ohms.?

When I press "T" I get 0.0 power. I checked the SWR protection set it higher, and restarted the radio, but still get 0.0 on the diagnostics screen. I then turned the SWR protection completely, then restarted the radio and still 0.0. The power transistors DO get slightly warm, but not suddenly. From what I can tell, everything is as it should be, but I'm still getting no power to the dummyload. I have no actual antennas yet, but should have one completed in a couple hours.?

I checked several patch cords (between radio and dummyload) and they all are working correctly, but still no power.

?
What should I be checking now? Is there a test procedure for this specific issue? There has to be others who have encountered this before...

Thanks again, btw...
Ahand59?


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