What are some tips for repairing LED displays?
What are some tips for repairing LED displays?
LED display according to industry distinction or belong to electronic products, as long as the electronic products, then in the process of use will inevitably fail. So what are the maintenance LED display tips?
Friends who have contacted the LED display know that the LED display is made of a piece of LED module splicing. As mentioned earlier, LED display is an electronic product, then its basic structure is the display surface (light surface), PCB (circuit board), control surface (IC component surface).
When it comes to repair LED display tips, first of all, the common failures. Common failures are: local “dead lights”, “caterpillar”, local color block missing, local black screen, large black screen, local garbage and so on.
So how to repair these common glitches? First of all, to prepare the repair tools. LED display repairman's standing five treasures: tweezers, hot air gun, soldering iron, multimeter, test card. Other auxiliary materials are: solder paste (tin line), promote solder, copper wire, glue and so on.
First, the local “dead lights” problem
Local “dead lights” refers to the LED display lights on the surface of one or more lights do not light, this does not light distinction for the whole time does not light and part of the color does not light, this is generally the case is the light itself has a problem, either moisture, or RGB chip damage, we repair method is very simple, is to use the factory with the LED lamp bead spares Can be replaced, then the use of tools is tweezers, hot air gun, replace the spare LED lamp beads, with a test card to re-test once again, there is no problem is already repaired.
Second, the “caterpillar” problem
“Caterpillar” is just a metaphor, refers to the LED display under power conditions and no input source, part of the light surface appears a long dark bright strip of phenomena, and red mostly. The root cause of this phenomenon is the lamp internal chip leakage, or behind the IC surface line tube line short circuit, the former for the majority. Generally this situation, we just need to take the hot air gun along the leakage of this one color change “caterpillar” blowing hot air, when blowing to the problem of that light, generally OK, because the heat makes the internal leakage of the chip connection Penghai, but there are still hidden dangers, we just need to find the leakage of that LED lamp bead, in accordance with the above Speaking of the method, the hidden dangers of the lamp beads replaced on the OK. if behind the IC surface of the line tube line short circuit, you need to use a multimeter to measure the relevant IC pin circuit, change a new IC can be.
Third, the local color block is missing
Friends of the LED display understanding must have seen this problem, is the normal playback of the LED display a small square color block, square, this problem is generally behind the control of the color block of the color IC burned out, the way to deal with it is to change a new IC can be.
Fourth, local black screen and large area black screen
Usually we talk about the black screen refers to the normal playback of the LED display, one or more LED module presents a whole region of the phenomenon of not bright, a few LED module area is not bright we call it a localized black screen, more areas of what we call a large area of black screen. This phenomenon, generally we first consider the power factor. General check whether the LED power indicator is working properly, if the LED power indicator does not light up for the power supply damage, change a new corresponding power supply can be, should also check whether the black screen corresponding to the LED module power cord is loose, many times to re-twist the wire can also solve the problem of black screen.
Fifth, local garbled code
Local garbled problem is more complex, refers to the LED display screen playback local area appears messy irregular may be random flashing color block phenomenon. This problem, we generally first check the signal line connection problems, you can check whether the line is burned out, whether the network cable is loose, and so on. Maintenance practice we found that the aluminum magnesium wire material is easy to burn out the wire, while the pure copper wire life is longer. If you check the entire signal connection is not a problem, then the exchange of the problem LED module and the neighboring normal playback module, you can basically determine whether it is possible to play anomalies in the region corresponding to the LED module is damaged, the cause of the damage is mostly IC problems, maintenance and processing will be more complex. Here will not expand the details.
In short, the repair of LED display is a long-term experience in the process, the length of this article is limited, first share so much. Welcome to add.
Friends who have contacted the LED display know that the LED display is made of a piece of LED module splicing. As mentioned earlier, LED display is an electronic product, then its basic structure is the display surface (light surface), PCB (circuit board), control surface (IC component surface).
When it comes to repair LED display tips, first of all, the common failures. Common failures are: local “dead lights”, “caterpillar”, local color block missing, local black screen, large black screen, local garbage and so on.
So how to repair these common glitches? First of all, to prepare the repair tools. LED display repairman's standing five treasures: tweezers, hot air gun, soldering iron, multimeter, test card. Other auxiliary materials are: solder paste (tin line), promote solder, copper wire, glue and so on.
First, the local “dead lights” problem
Local “dead lights” refers to the LED display lights on the surface of one or more lights do not light, this does not light distinction for the whole time does not light and part of the color does not light, this is generally the case is the light itself has a problem, either moisture, or RGB chip damage, we repair method is very simple, is to use the factory with the LED lamp bead spares Can be replaced, then the use of tools is tweezers, hot air gun, replace the spare LED lamp beads, with a test card to re-test once again, there is no problem is already repaired.
Second, the “caterpillar” problem
“Caterpillar” is just a metaphor, refers to the LED display under power conditions and no input source, part of the light surface appears a long dark bright strip of phenomena, and red mostly. The root cause of this phenomenon is the lamp internal chip leakage, or behind the IC surface line tube line short circuit, the former for the majority. Generally this situation, we just need to take the hot air gun along the leakage of this one color change “caterpillar” blowing hot air, when blowing to the problem of that light, generally OK, because the heat makes the internal leakage of the chip connection Penghai, but there are still hidden dangers, we just need to find the leakage of that LED lamp bead, in accordance with the above Speaking of the method, the hidden dangers of the lamp beads replaced on the OK. if behind the IC surface of the line tube line short circuit, you need to use a multimeter to measure the relevant IC pin circuit, change a new IC can be.
Third, the local color block is missing
Friends of the LED display understanding must have seen this problem, is the normal playback of the LED display a small square color block, square, this problem is generally behind the control of the color block of the color IC burned out, the way to deal with it is to change a new IC can be.
Fourth, local black screen and large area black screen
Usually we talk about the black screen refers to the normal playback of the LED display, one or more LED module presents a whole region of the phenomenon of not bright, a few LED module area is not bright we call it a localized black screen, more areas of what we call a large area of black screen. This phenomenon, generally we first consider the power factor. General check whether the LED power indicator is working properly, if the LED power indicator does not light up for the power supply damage, change a new corresponding power supply can be, should also check whether the black screen corresponding to the LED module power cord is loose, many times to re-twist the wire can also solve the problem of black screen.
Fifth, local garbled code
Local garbled problem is more complex, refers to the LED display screen playback local area appears messy irregular may be random flashing color block phenomenon. This problem, we generally first check the signal line connection problems, you can check whether the line is burned out, whether the network cable is loose, and so on. Maintenance practice we found that the aluminum magnesium wire material is easy to burn out the wire, while the pure copper wire life is longer. If you check the entire signal connection is not a problem, then the exchange of the problem LED module and the neighboring normal playback module, you can basically determine whether it is possible to play anomalies in the region corresponding to the LED module is damaged, the cause of the damage is mostly IC problems, maintenance and processing will be more complex. Here will not expand the details.
In short, the repair of LED display is a long-term experience in the process, the length of this article is limited, first share so much. Welcome to add.