faultymonitor

noun
UK /ˈfɔːlti ˈmɒnɪtə/
US /ˈfɔːlti ˈmɑːnɪtər/

A faulty monitor is a screen that does not work right.

The teacher could not show the video because the faulty monitor kept turning off.


OTHER MEANINGS

2. A person or system that checks for mistakes but does so badly.

The faulty monitor missed several errors in the report.

3. A device that watches something but gives wrong readings.

The faulty monitor showed the room was too cold when it was actually warm.

4. A screen with a small problem, like a dead pixel or flicker.

He returned the faulty monitor to the store because of the flickering lines.