LCD-Related Symptom (765D-9546, 765L-9547, 770-9548/49)

LCD-Related Symptoms

  The LCD for the notebook computer contains over 2.359.296 thin-film transistors (TFTs).
A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns.
The LCD should be replaced if the number of dots satisfies the following condition:
The number of missing, discolored, or lighted dots in any background is 21 or more.

For M/T-9548 see > LCD Pixel Policy Change
For M/T-9549 see > LCD Pixel Policy Change
Symptom / Error    FRU / Action in Sequence
   No beep, power-on indicator on, 1. Reseat the CPU card
   and a blank LCD during POST. 2. DC/DC card
  3. Video card
  4. System board
  5. LCD cable assembly
   ° LCD backlight not working, or 1. Reseat the LCD connectors.
   ° LCD too dark, or 2. LCD Assembly
   ° LCD brightness cannot be adjusted, (TFT) 3. DC/DC card
  4. Cable for inverter card
  5. Inverter card
   ° LCD screen unreadable, or 1. See (above) important note
   ° Characters missing pels, or     for "LCD Related Symptoms"
   ° Screen abnormal, or 2. Reseat all LCD connectors.
   ° Wrong color displayed. 3. LCD Assembly
  4. System Board
  5. Video card
   LCD has extra horizontal 1. LCD cable Assembly
   or vertical lines displayed. 2. LCD Assembly

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Feel free - send a Email-NOTE  for any BUG on this page found - Thank you.