I have this AV-27D304 here and the picture seems to be darker then it should be on all inputs. I decided to plug the old NES in via RCA cables so I could get some nice bright colors to compare with a similar but slightly older JVC, and yes the picture is displaying too dark.
The picture on the bad TV is displaying yellow as orange for one thing. I reset the settings in the Menu options, but it didn't help. I looked in the service menu quick for a reset to default settings but found none that jumped out so I didn't mess around with anything in there.
Doing a Google search, I found that this seems to be a common issue with this model, however I was unable to find a solution at any of the postings of the problem.
There seem to be quite a few knowledgeable people on these forums about TVs, and I would like to get this one working properly so I can use it in my second cab.
Thank you.