So I recently received an R55 remote from a disgruntled friend who lost a bet:), besides that, I am trying to use it with my MZ-N510 recorder. However this is really weird, becuase when I press play on the remote, the backlight starts up and it appears to be working, but then as soon as the MD plays, the remote just turns off. But if i press play on the md player, the remote works until I press something on the remote, and then it just turns off. When I use the ac adapter, it seems that it all works like a dream. This is really confusing, and if someone could please give some insight into how to fix this, i would be grateful.