Well, I found it. A 5 amp fuse marked cable box/sat in the DC fuse box inside near the AC breaker panel. As I reread the fuse labels, it was the one that seemed most relevant.
Thanks for all the ideas.
Dave
Thanks for all the suggestions. I had verified that the cable was bad which is why I wanted to replace it. From the roof side I dug out all the sealant around the cable and could see there was a piece of flat metal shoved up against the cable to act as a clamp. But cleaning and poking around with a screwdriver from the roof loosed things enough that I was able to pull 8" of coax from inside the coach so I just attached a cable connector and made a new 3.5 foot patching cable to connect the now extended cable to the antenna, and all seems well. That was way simpler than I expected. Hooray! Then came some other issues. I hadn't used the TV since May and when I turned it on, there was no digital signal. It took me half an hour to remember I had last used the tv using an HDMI cable instead of over the air signals. Now almost everything works OK. I will post the new problem separately, but suffice it to say I have no 12 volts supplying the Winegard signal amplifier and I can't figure out where the fuse is.
Thanks again for all the advice. I haven't made up my mind if replacing the now functional Winegard antenna will be worthwhile.
I have replaced the control board on my 2005 HR Scepter twice. I found the correct replacement board from Veurinks (164889 Electric Step Control Module REV 1 $149.99) and Lippert, the manufacturer, confirms that it is the correct board. The first replacement quit again after a year or so. The second replacement quit recently, but when I crawled under to check it I found the board connector had come apart and and all it required was to plug it back in. It was hard to get it correctly plugged back in, which is why it came apart to start with (I did it poorly). But that is probably not your problem. You can easily check the motor by applying 12 volts to it's two leads and then reversing them to get it to run the other way. But neither of the two replacement boards would work in my coach until I modified the boards by reversing the red and yellow leads. Maybe it was that my coach was wired incorrectly, or that Lippert is wrong. But the solution was simple, and it only took me a couple days to figure it out!
Here is the post I published in June, 2020 after solving the problem. Hope it helps. Also attached are three publications about Lippert steps. Good luck!
---------------------------------
Power step problem identified.
Thanks for the suggestions on my controller board problem. I recently posted about problems with a new control module for my 2005 HR Scepter power step. I spent several days trying to solve my step issue, and thought I would post my solution in case someone else encounters the same problem.
I bought a Lippert Electric Step Control Module, REV 164889. The package label says it is for all Lippert steps, but clearly it isn’t. I installed it but it did not work. After testing it against a Lippert test procedure, it appeared defective so I got a new one, which tested the same way. My conclusion – I must be doing something wrong, so I went back to the drawing board. I discovered that the Monaco wiring harness in my coach didn’t match up with the new control board, i.e., the red and yellow leads on the new module were reversed from that on my old module at the 4 prong connector, as well as reversed from the coach side wiring harness color code. I reversed the red and yellow leads on the module, and it now works mostly. (The coach red was +12V dc, the yellow 0 volts with ignition off, +12v with ignition on.)
The only issue now is that, after extending, the steps won’t retract unless I turn the ignition on, which makes it hard to store the coach with the steps retracted. But even that can be overcome if I turn the chassis power off, then back on while steps retract, and then off again.
The only module I could find for my 2005 Scepter is the one I bought, but there must be another module that would match the coach side connector and my old defective module. FYI, Lippert does sell a different shape module for 2006 and newer coaches, so I clearly didn’t have the 2006 and newer module.
I hope this will help someone else solve a step issue.
daveyjo's post in Winegard OTA signal amplifier has no power was marked as the answer