I've seen the same thing. It's usually moisture in the timing port.
Sometimes spider webs will do it too.
On 5/3/2018 2:52 PM, Nate Burke wrote:
Just ran into this scenario this morning. It's a new one to me. 450
5ghz SM. The Radio thinks it has a default plug inserted. This is
what we've all seen before, here's the new part - if you power it down
for 5 minutes, then it will then boot up normally. Any powercycle
shorter than that, or a webpage reboot, and it thinks the default plug
is in again.
We didn't want to install this customer since the radio needed to go
on top of an abandoned 80' concrete silo with no ladder. "No Problem"
the customer says, "I own a 100' Bucket truck that can reach the top
of it!", "Yes, but maintenance will be impossible if the truck breaks
down", "The Truck is Fine, I'll fix any problems, and I own it!" Of
course, he then promptly forgot our warnings about the inaccessibility
of the radio, and sold the truck. I told him he better hope that the
5 minute powering off trick keeps working.
