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Re: QMX+ RF output fluctuates wildly #QMXplus #troubleshooting

 

Hi Andy

I don't think that is the cause; the chipped ferrite is very common and doesn't normally cause functional issues.?

73 Hans G0UPL



On Wed, Apr 9, 2025 at 11:51?AM WB9YXA via <ahoffman1=[email protected]> wrote:
I believe I found it.? L501 is missing a corner and coils are exposed.? I was so focused on solder joints I didn't see it until I got an oscilloscope involved and I was tracing the pwm signal.
?
I actually have a replacement on hand, I'm going to try to swap it in for the damaged part.
?
Thanks all for your positive comments.?
?
73
Andy
WB9YXA?
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