While fine tuning the dish may be an issue, I'm going to ask some questions that may be considered elementary but are sometimes overlooked.
Do you use a single coax or duel coax to the LNBF? Either way the Diseq or 22Hz will have to be set to switch power to the Ku side of that LNBF in the setup menu. Single coax will require the 22Hz setting for Ku. If this is all correct, then you might want to also check voltage output at the Ku side to make sure that it's getting power when Ku is selected.
I have a feeling you are on to something here. Right now, I'm using a single coax to the C-band antenna lnbf. However, I'm working with an Ecoda switch so I can get a 90cm ku on the same box as well. I have the ku coax going through the 22KHz side, and the C-band coax using the 0KHz side of the switch. Then, on the Coolsat setup, I have the 22KHz set to "on" for the ku sats, and to "off" for the C-band sats. It switches from one to the other great, just with some SG9120 motor issues that predated this configuration.
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