Debugging Projector/TV/ Problems

March 31, 2019 2 minutes

Using technology to create a twenty-first century learning environment has long been a struggle for schools. At West, most of the classrooms have recently been equipped with large flat-screen TVs in place of the older SMART and Promethian brand interactive boards. The district got a grant to modernize its technology and will save money by cutting the need for projector bulbs, which looks great on paper for the administration, but is less practical for students and instructors. How is one supposed to demonstrate math problems on a non-interactive TV?

The most common problems that I find myself helping to fix during class involve getting the computer screen to show up on the TV. Often a room is shared by different teachers between class periods, and one teacher may use the desktop computer sitting in the room as a presentation station, while others reconfigure the TV to project from their laptops.

The fix:

  1. Verify that the TV’s “input” is pointing to your computer by pressing the “input” button near the top of the remote. Use the arrows on the remote to change the setting. Normally your computer will be connected to HDMI 1 or HDMI 2.

  2. Make sure that your computer is providing output to the TV. (This step assumes that you are on a Windows 10 system because that is what most of the teachers’ computers are running at West.) Use the keyboard shortcut Win+P to change your projector mode, and make sure that you have chosen either Duplicate or Extend in the menu (shown below). Windows 10 Projector Options

  3. Check and see that none of the cables you are using are unplugged or loose.

  4. Try turning the TV off and on again, and if that doesn’t work, restart your computer and try the above steps again.

  5. Submit a work order if none of these steps have helped to diagnose the problem. It is possible that there is a problem in your computer’s video card or with the TV’s HDMI port.