Hello. I recently did a 4k upgrade with the hs17 and two c61k's. The job was changed out to the reverse band 4k version. I was previously on an hr44 with one c41. The installer never removed the old power inverter from the attic. I was under the impression the inverter was no longer needs with the hs17 and could be removed. Is this correct, and if so would the hs17 reboot correctly once the old inverter was removed? Or was there some reason for him leaving the old inverter in place when he performed the upgrade. Thanks in advance for your help.