My mom has a DTT900 that works great. But, she wants to use it with a different tv and can't remember how to program the DTT900 to turn the tv on/off. And, of course, the owner's manual has been misplaced. I notice the owner's manual is not on the Zenith website. There are a couple other items, but they don't tell how to do this.
Good idea. You turn the converter box on, hold down the tv power button on the remote control and repetedly hit the channel up (or down) key. Eventually the tv will turn on/off. When it does - you've programmed it.
They also have a list of the brands of tv that this will work with in the manual.
If the first code she finds doesn't turn the tv back on again, have her keep going through the codes. I had to, to find the right one that did both. I'm also much happier now that I've programmed it into my learning remote.