Advertisements Hi Guys, I was in here a few months back discussing a problem I was having with tuning on my Series 3 OLED. http://www.tivocommunity.com/tivo-vb/showthread.php?t=480756 The problem is back and with a vengeance. Also, I'm not sure if maybe there aren't some additional problems at play here as well. It started with the fact that cablecard 1 was unable tune. It would just go to a blank screen. I ended up replacing the cable card and that seemed to fix the issue. Not too long after occasionally I would have a grey cablecard diagnostic screen popup requesting that I call TWC (Kansas City) and authorize the card. I called them and they verified that they were authorized and could communicate with the card. A few weeks later the TiVo started missing shows because it could not tune those channels. It was never the major network shows, only the one in the cable package. I later learned that these are the switched digital channels. It got so bad that if I tried to tune to anything but a major network that cablecard screen would keep popping up. Just 2 days ago we started having some problems on even the network channel while watching live (but buffered) where it would start to stutter and pixelate making everything unwatchable. I called TiVo support and they suggested that I pull up the signal strength meter. I was consistently hitting 95-100 on the higher channels so the tivo guys said we needed to knock it down. I had a TWC guy out yesterday and we removed almost 15dB of power from the signal and the power meter on the tivo was still maxed out so I'm not putting too much stock in how well that works. Anyways, we swapped the cable cards and the problem seemed to follow and moved to cablecard 2. Then we started having problems with both tuners within a few minutes. We replaced both cards and the problem still persisted. My only next step involving TWC is to replace the tuning adapter with I plan to do today. I have read that these Series 3 units have power supply issues (I can fix that no problem). From your experience do these problems seem TiVo related or cable related? What are the symptoms of power supply failure and hard drive failure? Any other suggestions? Thanks in advance for your help!