The "Initial Setup" auto program screen keeps flashing on and off intermittantly, more and more frequently (no matter what you try to do to stop it), until the remote is disabled. Pushing buttons on TV itself only temporarily helps problem.
I have the same problem with my sony it takes about a 1/2 hr for the picture to come on and from then on it just constantly blinks off and on. At first i thought it was the cable and the cable came and sed right away its the tv. this happened b4 but it fixed itself, now they tell me its doing this b4 the tuner goes bad.
After you have finished connecting your TV, you can use Auto Program to set up your
channels. During Auto Program, the TV will automatically search for available channels and
program receivable channels.
 Press POWER button on the TV to turn it on. The Initial Setup screen appears.
 Press CH+ button on the remote control or on the TV front panel to start Auto Program, or press CH-- button to exit.
The Initial Setup screen appears each time you turn on the TV until you perform Auto Program.
To perform Auto Program again
1 Press"MENU" button on the front panel of your TV.
2 Press "RIGHT ARROW button to highlight Channel Menu.
2 Press DOWN ARROW BUTTON to highlight CABLE or ANTENNA AND PRESS [+} to select.
4 Press UP arrow or DOWN arrow to highlight On or Off according to how you connected your TV. Press [+] to select.
4 Press F or f to highlight On or Off according to how you connected your TV. Press to
5 Press DOWN arrow button to highlight Auto Program. Press [+]to search for channels
6 After Auto Program finishes, press MENU button to exit.
Usually answered in minutes!