Troubleshooting Laptop

Question 1

LCD Display Troubleshooting

Answer 1

• No display or dim display
  
  • Verify the backlight
  • No backlight , then replace the invertors
• Confirm video with external display
  
  • Video good, but LCD bad
  • Replace the LCD display
• Flickering video
  
  • Connector problem
  • Bad video cable , bad video hardware

Question 2

Input issues

Answer 2

• Sticky key
  
  • Difficult to clean
  • Keycaps are very delicate
• Ghost curse / pointer drift
  
  • Mousepad causes cursor to bounce around
  • Modify the configurations to check for palm press
  • Update drivers

Question 3

Wireless Troubleshooting

Answer 3

• Multiple antennas
  
  • Wifi main & aux , Bluetooth
  • Antenna wires are wrapped around laptop screens
• Easy way to accidently disconnect during maintenance
  
  • No 802.11 wireless
  • No Bluetooth

-Check connectors

Question 4

Power Issues

Answer 4

• Battery not charging
  
  • Lose capacity over time
  • Charging hardware may be faulty
• No power
  
  • Check external power adapter (brick) with multimeter
• Master laptop reset
  
  • Hold power button

Question 5

External Monitor Issues

Answer 5

• Toggle Fn keys
  
  • Secondary functions
  • Toggle between LCD / External Monitor / Both
• Use external monitor
  
  • Bypass the LCD (but not the video hardware)