We'd had a nice 20" RCA set in the living room for a year or two, and it started going wonky for a minute at a time. (Power supply problem, for reasons I won't go into....involving a wrongly installed cable amp. ) Found an identical set but with a 26" screen, for the price of most 20" sets. Even worked with the same remote. Everything as it was. Spin the clock forward nearly ten years. Yesterday, the set's been on for about five minutes, and then goes dead. Despite desperate efforts to revive it, it remained silent. Found a virtually identical 20" set....but with analog AND DIGITAL tuner (including QAM, according to RCA's website). Price was even lower than before. Imagine that. Store had them in stock. It's hooked up now, and quickly found the 70+ analog cable channels during channel scan. (Even works with the same remote...again. ) It's just finished scanning the digital channels for a second time. First time it took like 900 years, but it identified at least 4 dozen. Problem? When the scan was done, it locked in on 50-3 (with a blank screen), and while in digital mode it wouldn't move off that channel, despite having identified so many. Now, after TWO additional scans, it's finding NOTHING on the digital side. Why did it first take so long, find so many but not display them, and then on later attempts find NOTHING, not even any QAMs? I have Comcast. Shouldn't there be at least SOME?