Common Failures and Solutions of LED Display
Short LED Life
The theoretical service life of
LEDs produced by regular manufacturers is generally around 80,000 hours. Now,
many luminous characters have not used enough for one year and began to
frequently replace Indoor LED Module, which has brought a lot of trouble and
economic loss to customers and advertising manufacturers.
Solution: Purchase qualified LED
single lamp pellets produced by regular manufacturers (the quality parameter
description provided by the manufacturer is required), and make the module
yourself. Do not try to buy a single LED light bulb or a manufactured module in
the electronic display market. If you need to buy a module, you should see how
many resistors are installed on the module. It is best not to use a best LED module with
one resistor installed. The resistor plays a current limiting role in the module
and is easy to generate heat. Continuous use for a long time, once the
resistance is burned out, this module will not light up. LED lights are
generally not bad. Don’t throw away the module, just replace it with a resistor
of the same resistance and use it normally. This saves money for production
units. In order to reduce trouble and save money, it is best to choose a module
with two resistors. In addition, understand the production facilities of the
supplier of the module, and see if it uses anti-static facilities when making
the module. If there is no additional anti-static device, even if the
resistance is not burned out, the LED lamp is easily damaged by breakdown.
Colors Decay Very Fast
The color of the newly installed
luminous characters is pure and bright, and the color will be dim after less
than one year of use. It is very ugly to make the font red or red or green or
green.
Solution: The safe use current of
LED lamps is generally 20 milliamps. Above this value, although the brightness
will increase a little, the color attenuation will significantly accelerate.
Therefore, when purchasing an assembled LED module, you must test its output
current value. Brightness below 20 milliamps is not enough, and more than 22
milliamps affects LED life and accelerates color decay.
Color Unevenness and Obvious
Color Difference
Mainly manifested in the
large-size luminous characters made of pure white LED. During assembly, the
performance of a single module is not obvious. After the entire font is
assembled, the color difference is clearly displayed. The entire font is like a
map, white, blue, and yellow.
Solution: White LED lighting need
to be spectroscopic and color-separated before leaving the factory (LEDs that
have not passed through the color-separation color separation are pure white,
some are bluish, and some are yellow). In general, small factories do not have
this kind of equipment, so white light produced is usually obtained from large factories
for spectroscopic separation. Since it is not a product of its own factory,
spectroscopic separation is not as careful. Some small factories simply do not
distinguish between colors. They generally pull customers at low prices.
Therefore, don’t blindly try to buy cheap white light LEDs, you must buy the
same manufacturer, the same batch, the same color number of the LED
light-emitting tube single particle lamp or module to make the same batch of
luminous characters.
Suddenly Off or Not On
After being used for a period of
time, the luminous characters start to flicker in part or the entire font light
source. Most of the light-emitting modules currently on the LED market are
connected by patch cords. In this way, the advertisement maker is convenient and
quick when installing the light emitting module. However, there are also some
new problems. Because the connector is oxidized by moisture in the air during
long-term use, it is easy to oxidize and cause poor contact. not bright.
Solution: a. No connector is
needed when making the module, and it is directly connected with copper
tin-plated wire and then welded with activated carbon solder. b. Use artificial
agate to make fully enclosed hollow three-dimensional luminous characters to
isolate the LED light source from contact with air.
The Font Output Power Is Large,
and The Power Saving and Energy Saving Are Not Obvious.
Solution: Try to use an LED light-emitting module with a set of five lights technology, so that the number
of lights has not changed, and the power has been reduced by two-fifths.
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