Protron PLTV-32 Television "wide dark area top bottom" Questions

Dark area in pix, top to bottom in the middle After about 16 months the screen has a darker area down the middle about 1" wide. Bad screen or can the display be adjusted in ''SERVICE MODE'?? This unit

...dark horizontal line almost in the center of the screen. I would go away after of few hours of the tv being turned off. As the scenes changed a bright spot would appear on the right size of the ...

...dark lines about a half in ch wide that run vertically from top to the bottom of the screen on the right side of the screen all the time. This indicates that there are bad connections in the cabling ...