MegaVision MV190T Manual Del Usuario página 24

Troubleshooting
ENG
Control buttons do not work.
- Press only one button at a time.
ABOUT THE LCD
The LCD contains over 3,932, 160 thin-film transistors (TFTs).
A small number of missing, discolored, or lighted dots on the screen
is an intrinsic characteristic of TFT LCD technology and is not an LCD
defect.
If you display a fixed pattern for more than 10 hours, its image may
remain on the screen in overlap mode when you display something else.
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