Recently our thousand year old RCA tv which has worked perfectly in the past suddenly lost channels 3 through 6 and also the latter channels like 77 for no apparent reason. I did the "auto-search" on the tv to look for "available channels, but it didn't work. The weird thing is that we now get channels 37-40 albeit fuzzy. We get the basic cable package. Is it time for a new tv or can this be fixed? Ps- our other two TVs in the upstairs room and room across from the defective tv work fine.