If your LCD TV uses T370XW02 / 37T03-C01 / 55.37T03.C01 T-CON controller and develops the habit of corrupting the image shortly after being turned on then chances are you need this service.
If your Samsung LN37A450C1DXZA has image deformations such as inverse colors or decreased brightness or a gray screen you may need its T-CON board serviced.