I posted this to the "Remotes" thread, but it also applies her soooo....
Setting up my Harmony 659 and I discovered that my Kenwood VR-510 is RF controlled unless I attach an external IR Receiver. Of course, Kenwood has discontinued their IR-9991. So, now I am on the prowl for a solution. It appears I may be able to use ChannelVision or Xantech products, except they are 12V DC powered and the VR-510 manual states that the "IR Rcvr IN" is 8V DC, 17mA. Don't think I need a connecting block since I'm not driving IR Emitters. Anyone have some background and feel for these IR products?
B/t/w - my VR-510 also appears to suffer from the posted VR-507 (& many other models) problem of it's remote not working. Next step is to pull the A/V Rcvr apart to resolder the suspect contacts.