32in.westinghouse HD tv has sound but no picture????

hello, i have a 32in westinghouse HD tv it has sound but no picture???? my husband looked at it but can't figure it out on the problem wth it. what i cant understand is that there is so many people are having the same problem as iam. why dont they do a recall on them. tv's are to expensitive to have them only lasting a year or so. so can anyone help with my question would be really appericated thanks and god bless!!!