I am having trouble transmitting. Yes, the backlight turns on when the volume is too high. However, now it doesn't transmit anything. The red "transmit" light does not illuminate for anything--even going into Setup mode (the Transmit light should blink 3 times but doesn't). There is no interaction between the remote and avr4520ci.
I am 2 weeks out of warranty, and have used this remote maybe 10 times (I generally use Harmonies). I have tried new batteries, and measured voltage to verify freshness. I've "reset all" via the owner's manual and verified both receiver and remote are on ID 1. I've done silly things like press every key with the batteries out to "drain residual charge" or maybe unstick contact bubbles.
This happened once before, but it suddenly started working after some fiddling and I figured I just wasn't smart enough to know why it stopped. Now after a few days I'm pretty sure it's just broke. Not happy, don't wanna spend $$$ on another remote. Any help appreciated.