I had virtually the same problem. The unit stopped operating after about 20 minutes, with no power out. Then repositioning the box on its back restored partial power, about 18 W on 80 m, dropping to about 1 W on 10. Others have reported similar experiences with sudden loss of power out. My guess is that this is related to thermal expansion and contraction of the circuit board—compromising SMDs or solder joints in the driver section—due to heating of the finals.?

I contacted the makers, and they sent me a new unit, which had a receiver problem. I’ve sent both of them back. Hopefully, I can get one that works. I suggest you also contact the makers. I think they have a serious quality control issue, and could end up with serious customer relations issue. ?

Jim

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