Problem with only 1 Channel....

V52 means that no signal is being received, which may mean that the signal for that channel is marginal since it must have been there when channels were being detected. V53 would mean that a signal is being received but there's no data stream for the program number the tuner is trying to extract. What are you seeing in TiVo box Diagnostics for Signal Strength, Signal Lock, Program Lock and SNR?

Duplicate channel entries are stranger. I think there's more data in the channel list entries than we can see, so they may not be exact duplicates to the TiVo. Try unselecting one set of "duplicates" for that station and see if you can then tune the channel, and if that doesn't work reselect those and deselect the other "duplicate" entries. In my experience, the first entries are probably the correct ones.

I have one local PBS station for which duplicate entries keep appearing occasionally. Right now there are four duplicates for the main subchannel and two for the other subchannel, which is probably about proportional to how often they are tuned (for recording). The "duplicates" presumably have different program numbers from the original (correct) entries. It's possible that the duplicates result from glitches in the transport stream which make the TiVo think that new program numbers are being used, but TiVo still needs to fix their software since signal glitches shouldn't cause such problems.

Just for the record, the same virtual channel numbers appear twice legitimately in my channel list, one set for a parent station that is too distant for me to receive and one for the translator (retransmitter) that serves us locally, but they're on different physical frequencies. That has caused some other issues occasionally, but I don't really think it's the problem here since I've seen the same issue on another local channel in the past.

 

The 2 channels were perhaps on different frequencies. Perhaps you chose the channel on the wrong frequency and that's the one without any picture. The guide may be on the wrong channel as well.