We often see on the internet a brief video of the change of backlights on television, and it is really easy and easy to see others change lights. You know, it's a few hundred bucks for a maintenance worker to come in and replace a tv lamp. No, it's lcd。
If you change the light yourself and break the screen, it'll be all right. Just throw it. But if you pay to fix the tv, break the screen, and they don't give you a screen, will you
That is the underlying reason for the high price of replacing the television lamp with a maintenance staff, who charged you $500 to ensure that you have a good television and can use it properly. In the event that the television screen is broken in the course of maintenance, whether it is purchased or repaired by the maintenance staff, the screen is fixed and the television set is fixed。
The tv changed the backlights to detail:
1. Ordering lamps
Backlights for televisions are not universal, and television lamps of different types are not universal for different brands, and even for the same brand, they may differ from time to time. If the lights were different, it would be a problem to install the lights, because not only the number of lights, but also the number of plugs, the fixed screw holes, and the length, so it's confusing when you can't get the tv out easily and the lights can't be installed
The risk increases once, knowing that televisions are dismantled once, and the more often they are dismantled, the more likely the screen is to have problems。
Lights for televisions are determined by the television model, the lcd panel model, and the type of constant-flowing light link. Even if the television model is the same, the lights may have a blue and white split. The backlights of the blue light beads and the white light beads are not universal, because they are not the same. The soft light membranes of the blue light beads can fill them with white light, but when they are filtered, they become yellow light。
2. Margin fixed
When we remove and move the lcd panels, we must wear gloves and avoid leaving fingerprints and sweat on the lcd screen or on the steering panel. Because when we move the liquid crystal-naked screens, the edges are hanging, and it's shaking back and forth. Don't look down on this. If you're in a hurry, the edge is just loose, so the dark line is there. It may have been the first time that the liquid crystal had been in the liquid
That's the risk of maintenance
If you don't consider this risk, it's just a cheap competition, and you earn more than you've earned。
Three. Lamp tape
The side-in-side lamps are taped when they leave the factory, and the back-in lamps are not taped because they are wide enough and there is enough heat spread space。
The majority of the posterior lamps malfunctioned as a result of the ageing of individual lamps or problems with batch quality. It would only be effective if television lamps were to have a longer useful life, if they were to be fitted with a guiding thermal tape, which would reduce the temperature by 10 to 15 degrees while working long hours, and at 40 degrees and below。
4. Degeling
Most televisions sold on the market are now extremely thin and thinner, but this type of television is a side-in-side source of light, with a light on the lower side of the television, using one, two, three or four lamps depending on the size of the screen. Because of this source of light, the high density of lamps, the small size of lamps, and the high heat, if not installed, and the high working temperature of individual beads, will lead to the early ageing of the television screen again。
There are two aspects of gel removal on tv:
1. Erosion of backlights
Lights from side-in-side light sources are attached to the steering panel with a steering tape, which, if removed with force, will leave much of the residue on the steering panel. If these pieces of tape are not cleaned, the new lamp patch will leave a gap, which will certainly affect the heat spread of the new light. Therefore, the old lamps can be sprayed directly with de-fouling agents and can be easily removed in a few minutes. It is then cleaned with cotton or paper. Two or three times in a row, the residue was cleaned up。
2 - liquid crystal panels defluorinated
The liquid crystal panel of the borderless television sets only relies on double-sided glue to fix it, so when changing the light, we need to cut the double-sided glue with thin sheets. Prior to re-installation, the residue on the border frame and on the liquid crystal panel must be removed, and this step is necessary. However, cleaning the residue on the lcd panel is the most troublesome, and the use of degels is concerned about the possible erosion of the transparent conductor layer on the glass base plate, with any impact, depending on time. And then you're going to pull it off with a little hand. Because of the size and thinness of the lcd panel, the pressure was too small, the pressure was too strong to break the glass。
The liquid crystal panel is the most time-consuming, one hour short, two or three hours long. This is a patient work that comes only a little, cannot be rushed or dry, and must be patient。
When a borderless tv is finally installed, it is important that a non-striped tape be attached to the lcd screen and frame, otherwise the double-sided glue will burst for more than a month and the serious lcd panel will fall。
5. Lamp plugs
The backlight problems of lcd television are not necessarily the ageing of the light, but may also be the protection of the recoil circuit, or the chronic high temperature exposure of the light plug. So when we change lights, we often encounter a lamp plug that breaks and it's hard to buy. What happens
Simple, remove the old plastics from the headlights and weld them directly to the head of the lamp, so that once and for all, the dots do not recur。
The details of changing the lights are also to be given slowly. Why are there so many videos about changing lights instead of showing the key details? Perhaps because they were not captured at the time of the shooting, more so because the details were costly and so-called technology-critical。
