Interference with 25ft VGA cable

I finally managed to connect my mac mini to my HDTV through a VGA cable that is 25ft long, but unfortuntely it produces a degree of interference, in the form of light/dark bands travelling upwards, that makes the display unusable.
Any solution for this?
Thanks,
Gmas.

Wouldn't know of one. My VGA monitor, with a VGA cable that is about 3ft, has interference too. Though, only at 85Hz. At 72, and 75Hz it's ok (at 1024x768). When at 1152x870, no matter what refresh rate, I get interference...
This is because the Mac mini is weak on it's VGA output, it doesn't pump enough juice...

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