I have a Sansui HDLCDVD265 26" TV/DVD Combo. It has sound but blank single color display. Originally it was having this problem but after bing kept on for a few minutes it would be back to normal But now it seems to be with no picture and on only sound exists. I opened the TV and observed the electrolitic capacitors minutely, but they all seem good. any tips as to what could be the issue? Thanks