This typically indicates that the monitor is not receiving a video signal from the video card in the computer. You should verify that the card is the problem by trying the monitor on a different, working system. You should get an image. If the same thing happens on a different system, the monitor may need to be repaired.

The LED emits a full spectrum light color. This appears as a white light with a slight bluish tint. Full spectrum light is the the same spectrum of light that is emitted by sunshine. Full spectrum light will give you the most true appearance of an object viewed under it. There is a very good explanation about the advantages of full spectrum light on the OTT-LITE? website at http://www.ott-lite.com/cms/vsp. See similar questions...

The LED light source is warranted by us for life. If you left the LED light source turned on and running continuously it would burn for 25 years before it would need replacing. It would also maintain its same brightness during these 25 years of continuous use before it finally died and went black. See similar questions...

These LEDs (880 nm) are on and working properly. You cannot see them because they are in the infrared spectrum, which is not visible to the human eye. Some digital cameras and camcorders will display the infrared lights. See similar questions...

The LED light source does not contain a fragile filament as does all the incandescent light sources found on all other otoscopes on the market today. We hold the patent and are the only company that offers an LED otoscope. One of the greatest advantages of having an LED light source is that the LED bulb is almost indestructible when it comes to dropping the otoscope or handling it roughly in any way. See similar questions...

An incandescent bulb is highly inefficient and requires 10 times more energy than an LED. The capacitor in NightStar can only power a filament light bulb for a few seconds. By comparison, the energy stored in a battery is great enough to power inefficient devices for several hours. However, when a battery's energy is depleted, it either has to be discarded or recharged. Rechargeable batteries require external and often costly charging devices. See similar questions...

Our LED light strings are safe. We would never sell anything we did not feel comfortable using in our own homes. This line of thinking also goes with our standard of quality. You will not find "cheaply made junk" in our stores. Our lights are approved by Underwriters Laboratories (UL) and/or the Canadian Standards Association (CSA). See similar questions...

Although the anti-aging photo rejuvenation lights were not designed specifically to handle acne and blemishes, the light waves stimulate the skin's natural healing process which helps in the treatment of acne, pimples and blemishes. The choice of light depends on what you are trying to accomplish. BLUE light comforts and soothes skin, and has anti-sensitive functions. It is used clinically to treat acne, as it is absorbed by bacterial acne, resulting in a toxic environment for the bacteria. See similar questions...

YES, using infrared LED photo rejuvenation lights according to directions will help normalize dry skin. See similar questions...

Lasers are monochromatic (single color wavelength), collimated (non-divergent) and coherent (wavelengths in- phase) in contrast, LED's are neither coherent nor collimated and generate a broader band of wavelengths (multiple). In addition, a significant difference between the two is the power output. The peak power output of lasers is measured in watts, while that of LED's, is measured in milliwatts. See similar questions...

No, we feel that the LED technology for underwater lights is not quite developed yet. There is no cost advantage or increase of light output compared to our halogen, xenon and metal halide technology. Light failure of LED requires changing the whole fixture. See similar questions...

A light-emitting diode is a semiconductor device which emits light when an electrical current flows through it. Semiconductor diodes can also be used as light detectors. Light-emitting diodes are good detectors of light of specific colors. Generally, the wavelength of light detected by an LED is shorter than the wavelength of light emitted by the same LED. For example, certain red LEDs are relatively good detectors of orange light. See similar questions...

We have used various techniques. The first year, we made a giant fishing pole out of swimming pool brush poles and lowered the cup on a hook over the sensor and released it. This was a very difficult task which took 3 people. In 1999 and 2000, we used an 8 ft. diameter helium balloon to lift the cup. It still took 3 people, but it was a lot easier on the arms and there was less yelling. In 2001 we broke down and rented a lift. See similar questions...

Flush module unit is not working. Check to see if red indicator on the battery box (near connector) stays on. Under normal conditions, the Red indicator should flash 4 times when the motor unit receives a signal. See similar questions...

The red LED light flashes three times when the phone is picked up and the TeleZapper emits its tone. Since the light is off at all other times, it does not mean your TeleZapper is not working when the light is not illuminated. Plenty! There are millions of non-working telephone numbers. Telemarketers succeed by efficiently connecting their operators to PEOPLE and then selling them something. The last thing they want is to waste time being connected to a non-working telephone number. See similar questions...

Light Emitting Diode (LED) is a semiconductor device that emits light when an electric current passes through it. LED lights are brighter in one spot while regular lights are softer. See similar questions...

Lamps used for street lighting purposes are gas discharge lamps, which are much more efficient than the light bulbs you use in your house. The elements contained within the lamps give colour to the light emitted and the Lighting Engineer has a large choice of lamps from which to select. The low pressure sodium lamp is the most energy efficient, but has the drawback that its strong yellow/orange colour makes it difficult to tell the true colours of cars and other objects. See similar questions...

This indicates your Xbox is overheating (and is protecting itself by not allowing usage), ensure you have 6 inches of space on each side of the Xbox and your Xbox is off of any soft materials such as carpet that may block the ventilation openings. See similar questions...

ORANGE OVERHEAT LIGHT..........Illuminates if PULSE POWERTM determines that internal temperature exceeds a safe level and terminates charging cycle. Battery may be charged and can be immediately used. If left on the charger, charger will transfer to maintenance mode when safely cooled. See similar questions...

Cars with orange names are number/driver/sponsor combinations that have actually competed in the Champ Car World Series or Champ Car Atlantic Championship. See similar questions...