The remote was working fine for a year then it mysteriously stopped operating my JVC X9 projector (it may have co-incided with a Harmony software update?).

The projector is the only device not in a cabinet. The remote does not power it on. The projector's original remote works and I've tried relearning the 'power on' button from that remote but to no avail. The 'fix it yourself' does not work either. It never will switch it on.

If the projector is on then the Harmony remote can switch it off using the 'fix it' button. But that is all.

Very frustrating. Advice welcomed.