I recently had to replace an HR20 and I was sent an HR24. It is not connected to an AVR I am using a couple of external Altec Lansing 3 piece speaker system. I am having horrible audio dropouts with the problem presenting itself more on some channels than others. I researched this and it looks like a long standing issue with the HR24s. When I use the 6 second skip back the problem seems to go away for the most part. Also turning off Dolby Digital helps but the PCM sound suffers even through my cheap Altec Lansings. I think I know the answer will be that there is no resolution to this but I was wondering if I might luck out on getting a different HR24 unit? Directv tech support said that I have to have a service call before trying another HR24. Service call will not cost me because I am in a 90 day window so should I have the service call and see if another HR24 will help or is that going to be a waste of time?