I have a '04 non-navi TSX and recently it has started blinking periodically for no apparent reason. For example, when I am driving it will dim and the radio display will go blank, then light up again and then do it again a few minutes later. I was wondering if anybody had a similar experience?

 

You might want to do a search on the threads on here dealing with blank or dark radio displays. This seems to be an unofficially known issue judging from the previous posts on here.