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El portátil se calienta y se apaga por calentamiento, polvo dentro de la zona de ventilación. Traelo al taller.

Como todo electrodoméstico que lleve ventilación, el portátil también necesita un mantenimiento del ventilador. Cada  año y medio aproximadamente, recomendamos realizar una limpieza de ventilador y cambio de pasta térmica. La función del ventilador es refrigerar el chip gráfico. Este se encuentra soldado a la placa por varias micro soldaduras. El chip lleva una pasta térmica, cuya función es la de disipar el calor que de por si genera el chip. Si el ventilador está  obstruido por el polvo, no ventilará lo suficiente, provocando que la pasta térmica se seque. Ésta a su vez perderá la capacidad de disipar el calor. En estas condiciones, el ordenador se calienta más de lo debido, y si la temperatura sube demasiado, los sensores de la placa base lo detectan, y como protección provocan un apagado repentino del equipo. Una vez baja la temperatura, podemos volver a usar el equipo, pero no son las condiciones óptimas, ya que a corto plazo esta situación puede comportas problemas más serios.

Para evitarlo, hay que realizar una buena limpieza del ventilador ( no es suficiente con soplarlo con un compresor), y realizar un cambio de la pasta térmica. A veces ocurre que hay tanto polvo que el ventilador se atasca, o se dañan algunas aspas. En este caso, el técnico deberá valorar un cambio de ventilador.

 

¿Sale a cuenta la limpieza como reparación en sí misma?

Lógicamente sí que sale a cuenta una limpieza de ventilación. Ya hemos comentado antes que debería hacerse cada año y medio aproximadamente.

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Cats are similar in anatomy to the other felids, with a strong, flexible body, quick reflexes, sharp retractable claws, and teeth adapted to killing small prey. Cat senses fit a crepuscular and predatory ecological niche.

Evidence suggests that cultures around the world have found a place for people to share stories about interesting new information. Among Zulus, Mongolians, Polynesians, and American Southerners, anthropologists have documented the practice of questioning travelers for news as a matter of priority. Sufficiently important news would be repeated quickly and often, and could spread by word of mouth over a large geographic area. Even as printing presses came into use in Europe, news for the general public often travelled orally via monks, travelers, town criers, etc.

Cats have excellent night vision and can see at only one-sixth the light level required for human vision.

Cats conserve heat by reducing the flow of blood to their skin and lose heat by evaporation through their mouths. Cats have minimal ability to sweat, with glands located primarily in their paw pads, and pant for heat relief only at very high temperatures (but may also pant when stressed).

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Cats have excellent night vision and can see at only one-sixth the light level required for human vision.

Cats are obligate carnivores: their physiology has evolved to efficiently process meat, and they have difficulty digesting plant matter. In contrast to omnivores such as rats, which only require about 4% protein in their diet, about 20% of a cat’s diet must be protein. Cats are unusually dependent on a constant supply of the amino acid arginine, and a diet lacking arginine causes marked weight loss and can be rapidly fatal. Another unusual feature is that the cat cannot produce taurine, with taurine deficiency causing macular degeneration, wherein the cat’s retina slowly degenerates, causing irreversible blindness.

A cat’s gastrointestinal tract is adapted to meat eating, being much shorter than that of omnivores and having low levels of several of the digestive enzymes needed to digest carbohydrates. These traits severely limit the cat’s ability to digest and use plant-derived nutrients, as well as certain fatty acids. Despite the cat’s meat-oriented physiology, several vegetarian or vegan cat foods have been marketed that are supplemented with chemically synthesized taurine and other nutrients, in attempts to produce a complete diet.

A cat has absolute emotional honesty: human beings, for one reason or another, may hide their feelings, but a cat does not. Ernest Hemingway

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Domestic cats use many vocalizations for communication, including purring, trilling, hissing, growling/snarling, grunting, and several different forms of meowing. By contrast, feral cats are generally silent. Their types of body language, including position of ears and tail, relaxation of the whole body, and kneading of the paws, are all indicators of mood. The tail and ears are particularly important social signal mechanisms in cats; for example, a raised tail acts as a friendly greeting, and flattened ears indicates hostility.

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In ancient Egypt, cats were sacred animals, with the goddess Bastet often depicted in cat form, sometimes taking on the war-like aspect of a lioness. The Romans are often credited with introducing the domestic cat from Egypt to Europe; in Roman Aquitaine, a first- or second-century engraving of a young girl holding a cat is one of two earliest depictions of the Roman domesticated cat.

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