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QMX - smoke - another C107/Q108 failure


 

Hi all

I completed the QMX kit build and got everything up and running OK including making some initial FT8 QSOs.
I built for 12V and have been running on 12V from my regulated (but not current limited) bench PSU with a total power on time so far of about 2 hours.

So today I was exploring the menus for beacon mode, when the magic smoke suddenly escaped - QMX was not transmitting at the time
It looks like the C107/Q108 failures reported by others here

I think the best approach here will be to rig up linear 3.3/5V supplies (I have plenty of linear regulators to hand) to test the main boards for collateral damage before repairing the PSU board

Any thoughts ?

Cheers

Rick


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