Intermitent display problems

When I bought my VB, it’s right display had the misalignment problem and showed corrupted graphics too, I was very disappointed at that time, but discovered that leaving it turned on by almost an hour, with a moving image, corrected both problems. Now I don’t play it too much, but use it eventually to test my projects on it, and found that after not using it by sometime both problems shows up again, but using the same technique as above, solves the problem again.

Does anyone experience such situation too?

Jorgeche