Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals Presentation 32 – Video System Troubleshooting

2 Objectives At the end of this presentation, you will be able to:

3 Describe the cause of several common video system failures. Identify the symptoms and solutions for several common monitor problems. Identify the controls on a typical monitor and explain or demonstrate how each should be adjusted. Explain the proper method of cleaning a monitor.

4 Using a Monitor’s Front Panel LED as a Troubleshooting Tool

5 This little power LED tells a lot...

6 No Picture and LED ON...

7 No Picture and Power LED ON... Adjust contrast and brightness controls all the way up. Press RESET button if monitor has one.

8 No Picture and LED OFF...

9 No Picture and Power LED OFF... Monitor Power Switch OFF? Monitor’s AC Cord Unplugged?

10 No Picture and LED BLINKING...

11 No Picture and Power LED Blinks... Computer turned off? Cable between monitor and computer disconnected? Power Management feature turned on and monitor in low-power stand by mode?

12 Cleaning a Monitor

13 To clean a video monitor... Unplug it first Dust it with a dry soft cloth or a cloth dampened with water (CRT face too) Clean ventilation slots

14 Picture Adjustments

15 Reset Button Reset

16 Degauss Button Degauss

17 N S

18 Horizontal Size Door

19 Horizontal Position

20 Vertical Size

21 Vertical Position

22 Pin Cushion

23 Bow

24 PinSignal PinSignal Red Green Blue Ground Display Data Channel Ground Red Ground Green Ground Blue Ground No Connection Sync Ground Ground Serial Data Horizontal Sync Vertical Sync (VCLK) Serial Clock VGA Cable End

25 Opening a Monitor to Repair It

26 Opening a Monitor

27 Basic Video Troubleshooting

28 Basic Video Troubleshooting Is the monitor turned on?

29 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in?

30 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls.

31 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable.

32 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable. Check Power On Self-Test (POST) beeps.

33 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable. Check Power On Self-Test (POST) beeps. Re-seat video card and any socketed chips.

34 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable. Check Power On Self-Test (POST) beeps. Re-seat video card and socketed chips. Check any configuration switch settings.

35 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable. Check Power On Self-Test (POST) beeps. Re-seat video card and socketed chips. Check any configuration switch settings. Swap video card, monitor, video cable.

36 Basic Video Troubleshooting Is the monitor turned on? Is the monitor’s AC cord plugged in? Turn up brightness/contrast controls. Check the video cable. Check Power On Self-Test (POST) beeps. Re-seat video card and socketed chips. Check any configuration switch settings. Swap video card, monitor, video cable. Enter Safe Mode or re-load video driver.

Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals End