The 4 blinks do not actually mean that your lamp is defective, but rather that something is wrong with the TV's A-board. Specifically, 4 blinks means no vertical deflection (V STOP), which screen goes to a single horizontal line then the video signal muted. My recommendation to fixing this problem would be to call Sony and ask for repairs, and you can contact them at:
800-222-7669
Mon-Fri 8:00AM-12:00AM
Sat-Sun 9:00AM-8:00PM EST
If you want to get a hold of a customer Rep quickly, you can try pressing the 0 key on your phone about 3 times.
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