S23 - Troubleshooting Video Issues Flashcards
Between DP, HDMI, VGI, DVI, Thunderbolt, which cables carry audio and which do not
HDMI, Thunderbolt, DP carry audio
VGA and DVI do not
Define High-Bandwidth Digital Content Protection (HDCP)
Protects the audio and video signals between the systems over HDMI and DP
HDCP troubleshooting
Turn the tv off an on, Upgrade the quality of the HDMI cable, The device may not be authorised for HDCP
What is it called when a projector can no longer display an image
Burned out bulb
Average lifespan of a projector
500-2000 hours, there is usually a counter to indicate how many hours the bulb has been used for
What can we use in terms of equipment and methodology to prevent damage to the projector when switching bulbs
Gloves, wait 15-30 minutes to allow the bulb to cool down
Why might a projector shutdown
To prevent overheating / there is no source input detected
Why might we have dim images on our display
No brightness or colour contrast control set or it
Why might the display be fuzzy
Output resolution being sent from the computer itself is lower
What does flashing screen mean
Cable is not properly connected
What is an absolute truth when talking about dead pixles
there is not fix
When does burn-in occur
When the same static pictures is displayed on the screen for a long time
What can we do to prevent burn-in
Use an animated screensaver, turn on sleep mode / disable activity
Define colour bit
Actual number of colours displayed
Different bit colour displayed
8-bit colour palettes (256 colours)
16-bit (32,768)
24-bit aka True colour display (16,777,216 colours)
32-bit aka Deep colour display (1Billion colours)
