I have 2 problems. 1. I think I need a remote code for Sony A/V receiver. Model # str-dh500. The remote model # is rc24. I can turn the receiver on/off, but volume will not work. It only goes up, not down. 2. The bigger issue is when I use the volume up/down on the D* remote the tv volume responds (panasonic TC-P50X1) and not the Sony a/v receiver. Any help would be appreciated. Thanks.