How to Fix Your Samsung DLP TV's Random Shutdowns

By Andrew Tennyson

Ensuring that your Samsung DLP device is correctly configured is essential for an enjoyable and problem-free viewing experience. Technical problems with the device's power supply are the most common culprit leading to random shutdowns. These problems must be remedied by a certified Samsung technician in order to avoid voiding the warranty on the device. However, improperly configured image settings may also result in random shutdowns. Before spending the money to have a technician look at the TV, first try restoring the device's image settings to their factory defaults.

Step 1

Press the "Menu" button to load the device's main menu.

Step 2

Press the "Down Arrow" button, highlight Setup on the main menu and press "Enter" to load the Setup screen.

Step 3

Highlight Reset on the Setup screen and press "Enter."

Step 4

Highlight Image Reset and press "Enter."

Step 5

Highlight "OK" and press "Enter" to confirm that you want to return the device to its factory-default image settings.

Tips & Warnings

  • The safety switch exists so the user does not accidentally remove the lamp door while the TV is on. Doing so could, theoretically, result in burn or electrocution. This spring loaded switch causes the TV to shut down when the door is opened.
  • Since the TV's chasis is plastic, expansion and contraction can cause the switch to lose firm contact with the lamp door. The TV's behavior could then be such that after being on for a while (getting warm) the plastic expands and the switch loses enough contact to cause the TV to shut down. The frequency with which this phenomenon occurs is not only dependent on the internal temperature of the TV, but also the ambient temperature of the room as well as the relative tension on the switch itself. The user's perception is that the TV starts up fine, but then "randomly" turns itself off after being on for a while.
  • If you have recently moved your TV, it is very common for random shut-downs to occur. This is because the move has shifted the flimsy plastic chasis of the TV, thereby loosening the contact between the lamp door and the switch.
  • Information in this article applies to Samsung 400CX-2, 400CXN-2, 460CX-2 and 460CXN-2 devices. It may vary slightly or significantly with other versions or products.