Facing TV Problems? Ask a TV Technician.
Hi and welcome to the site, I’m Louie for the second opinion. Sorry you had to wait awhile but I’ll do my best to help.
Initially, does the description of "...no picture..." mean that the screen is all blue, black or white ?
IF blue, then check the source such as a DVD player, cable box as well as the connecting cables.
IF white, then check the channel selection,
IF black, then potentially an internal hardware issue. Are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?