DELL INSPIRON 15 5577 Full HD LCD LED 15.6" SCREEN B156HTN03.8 28H80 028H80

Refresh Rate : 60 Hz. Test the LCD screen before installation by connecting it to the laptop while keeping the screen outside the casing. Power on the device to confirm the display is working correctly (shows image, no flickering, lines, or dead pixels) before proceeding with full installation.

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