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Basically, the title. It's an old Toshiba flat screen. I successfully "taught" the keyboard the power button code. The keyboard will turn the TV off, but not on. The power button on the remote is just one button, a toggle, like normal. Of course, the remote will turn the TV on and off, by pressing that one button. I can't imagine what is wrong, it must be the same code for on and off, right? I mean, the things aren't that complicated.
Thank you.
EDIT: It works if I program a button on the keyboard other than the power button. So I programmed button "C1" as the power button and for whatever reason, that button will turn the TV on and off. Weird. It's the keyboard treating the power button differently.
I have that same remote/keyboard and love it.
Had the same problem and similar solution with some LED candles since I kept losing the little mini remote. I taught C1 from the power button on the candles' mini remote. It would turn them on, but not off. So I had to make C2 the "off" command by learning it separately.
I have absolutely no frigging clue why that works the way it does. You'd think it would be the same signal either way, but something is definitely different.
So far, that's the only device that acts like that. I programmed the power and directional buttons to control my Eufy robo vac, and those work as expected. The buttons above C1 and C2 work to toggle power (left button) and cycle thermostat settings (right button) on my electric fireplace correctly as well.
Having dabbled with remote codes I can only assume that the remote sends a different, albeit common, signal. My Chromecast remote for example does not send (via Bluetooth) a traditional signal code for power, but a signal name that only is recognised by some devices.