Numéro d’article: 000133566

Notebook LCD Powers Off During Normal Use

Résumé: This article provides information to resolve issues with an LCD screen powering off or going into Standby/Suspend or Hibernate during normal use.

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Contenu de l’article

Symptômes

LCD powers Off during use

You may notice that your LCD screen powers off or goes into a standby/suspend or hibernate state.

Cause

Check for these possible causes:

Magnetic bracelets or Jewellery
Stacking of notebook systems on top of each other
Electrical devices in close proximity
Other magnetic sources

Résolution

On many laptops there is a magnet located in the LCD bezel (A) (usually the top-right corner). When the screen is closed, this causes a reed switch in the palmrest (B) to close, completing a circuit. This activates whatever action your operating system has set for when the lid is closed. Commonly, turns off the LCD or sends the system into a low power standby mode.

Figure 1: Diagram shows approximate locations of LCD reed switch and magnet that can create a no video scenario.

Propriétés de l’article

Produit concerné

Laptops

Dernière date de publication

19 نوفمبر 2021

Version

Type d’article

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