Curvature in grids - new Toshiba 57"

Discussion in 'Beginners, General Questions' started by Michael Stewart, Apr 12, 2003.

  1. Michael Stewart

    Michael Stewart Auditioning

    Apr 12, 2003
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    Hi, all;

    This is my first post; I did not see this covered in the FAQ.

    We just purchased a Toshiba 57H82. Now, I am being patient with burn-in, etc., but I have noticed that, when viewing a grid, letterbox, etc., purprtedly straight lines at the top actually form a gentle wave across the top of the screen (i.e., straight for a distance, then occasional dips and rises_. Also, there is a definite "pull" at the right top and bottom corners - the right op pulls up, the right bottom pulls down. Same thing with test grids - definitely not displaying a perfect square. This is the same regardless of which move- theaterwide, native, full - I use.

    This doesn't appear to be a convergence problem. I manually converged using the "forbidden service menu" - the lines are coverged, they are just not straight.

    Is this normal? Something that will improve with burn-in? Something I should be worried about as a sign of a defective TV?

  2. Eric Samonte

    Eric Samonte Screenwriter

    Mar 31, 1999
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    These curves could be adjusted up to a point in the service menu using the 56 point convergence. It would bew a tad bit daunting but u might have to straigthen them urself.
    U should turn off the blue and red guns and straighten out he green first. Afterwards, turn on the red and match it with the green and then the blue gun. If after doing this, it is still very evident then maybe u should call in a tech to have it examined.
    A word of caution though, If u are not comfortable doing this at all then by all means call in a tech. NEVER say u went into the service menu. If they can't make it right, demand a replacement.

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