Dell P780 17" CRT Monitor(3 yrs old) issue
That sounds like a monitor issue, not a video card. Gradual fading means components within the monitor are wearing out. However, I strongly advice against attempting repairs.
CRT monitors hold a strong electrical charge. People have been injured and even killed by attempting to work on them without proper tools and training. A 17" CRT monitor is too cheap to be worth the risk (you can often get them used... I got mine for $20 at Goodwill).
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