After reboot, power to my LNB shuts off after a short time; seconds or minutes.
Even with no cables connected [just an electronic volt meter], I get correct 13vdc for a short time, then it cuts to nearly zero [measures .03v].

The box is old but still seems to boot correctly, plays recorded programs, and connects to the network. The only error shown is 'Tune failed'.

The problem started when I connected a new ivancom LNB, but that may have been coincidence. Before that I had an old offset LNB connected for a year, it worked but signal strength was low; so it had power.

Has anyone else had this happen?
Any hints?