Polaroid FLM-4034B, Service Manual

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3. Polaroid Display Cell Defect Specification
In some cases, a panel may have defective cells that cannot be controlled.
These defective cells can be categorized into two types;
(1) Non-lighting or dark cell defect: defect in which the cell is always off
(2) Non-extinguishing or bright cell defect: defect in which the cell is always on
The Polaroid Display Cell Defect Specifications below define the allowed limits for display cell defects and are
used as the criteria in determining whether an LCD panel is replaced.
7 or more defective pixels across the entire LCD screen Polaroid will repair (replace LCD panel) or replace the
TV.