Tv on/off codes for hitachi when used with a zenith converter box dtt 9901. Can't use zenith remote to turn tv off and on. I followed manual instructions, didn't work.

SOURCE: my digital tv tuner converter box with analog Zenith converter bo

Most DTV converter boxes have 2 outputs available; RF and component video. The RF goes in between the antenna and the TV and acts as a frontend tuner. The TV needs to be set to Channel 3 or 4 (depending on the box) and left there. All tuning is then by the converter box. By the way, you need to scan for channels as part of the setup. The other method is by using the audio/video component inputs to the TV and the set would then select AUX 1 or 2 etc to get the box input, and tune via the box.