Trouble-shooting 5.4 - vid, projector, display

Question 1

Low-resolution mode (formerly VGA mode)

Answer 1

• resolution issue = lower the resolution settings to one supported by the monitor
• driver issue = download and install the latest device driver for the installed video card

Question 2

Overheat shutdown

Answer 2

video card overheating = image on the display garbled/flicker/stop working
Once it cools, the display will work again
- cleaning out the inside debris
- internal fans are operational?
- replace the adapter with a known good card
monitor is overheating = replace the monitor

Question 3

Dead pixels

Answer 3

stuck pixels or dead pixels
Stuck pixels = fixed color never change
Dead pixels = black.
only trained technicians should work on monitors. Replace the monitor, check warranty/contact the manufacturer.

Question 4

Artifacts

Answer 4

often caused by the video card so replace it
*can be caused by any hardware component in the computer that causes data corruption

Question 5

Color patterns incorrect

Answer 5

1. display is fine when the computer first boots but has problems after Windows loads = problem is probably with the display settings configured in the operating system
2. display has color problems from the start of booting = hardware problem.
   Test each component, including cabling, monitor, and video, one at a time until you discover which component is causing the problem.

Question 6

Dim image

Answer 6

Change brightness setting on the monitor
If you have a CRT monitor, the monitor is probably dying and should be replaced.
If you have an LCD monitor, the backlight is probably going bad. The backlight can be replaced without replacing the entire monitor.

Question 7

Flickering image

Answer 7

are cables are seated properly?
replace the cables?
Increase the refresh rate

Question 8

Distorted image

Answer 8

Replace the power cable
If that does not help, plug the monitor into another outlet.
If the problem persists, you may need to contact building maintenance or electrical professionals because it could be an electrical issue in the office or building.

Question 9

Distorted geometry

Answer 9

picture displayed on a monitor has a curvature to the left and right edges, you need to adjust the geometry settings built into the monitor. Pincushion or barrel distortion is not caused by the video card

Question 10

Burn-in

Answer 10

occurs when the same desktop display is left on a monitor long enough to affect the function of the individual pixels within the monitor’s screen
- either replace the monitor or have it repaired
To prevent burn-in, you should configure all computers to use a screen saver that changes, moves, or goes completely dim.

Question 11

Physical cabling issues - things to check for

Answer 11

check whether cables:
- do not meet standards
- out of date
- the cable and connectors are not compatible
- been damaged
- not installed properly

Question 12

Burned-out bulb (3 ways to tell)

Answer 12

• brightness is dimmed
• lamp turn-on time takes longer
• image displayed looks distorted.

Question 13

Fuzzy image

Answer 13

change the screen resolution to the recommended settings. Alternatively, you can change the scaling options within the display settings to fix the problem.

Question 14

Incorrect data source (not projecting right image)

Answer 14

is everything is properly connected?
- restart the device
- check to make sure the cables are not damaged
- check to see if any driver updates can be installed. - make sure the data source on the projector is correctly selected, especially if there are multiple ports to which a device can be connected.