Macbook 13" screen blinks?!!

Hey
I've connected my macbook to a TV using the apple mini-dvi to video adapter.
however, when it's connect both screens (the macbook and the TV) is blinking every other minute, which is quite annoying!!
Does any of your know what causes this? the macbook is not "blinking" when it's not connected to the tv!
Thanks guys!
P.s. by "blink" I mean the screen are turning off for a short sec.

So do both screens blink out in unison or in an unrelated manner? And when they blink out, do the screens go black and then come back, or black then blue then come back, or ???. Please describe as completely as possible because the soluton could be tied to the precise nature and timing of the symptom.
Also, how are you connecting to the TV? Is it by composite or S-Video? And what kind of TV is it? An old style, CRT TV or a newer flat panel type?

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Message was edited by: w7ox

Macbook 13" screen blinks?!!

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