About the identification method of LCD TV

In fact, buying TV from the Internet is a matter that makes many consumers feel tangled – the low price on the heart of water, but they are afraid of buying deep prototypes and grades; they feel relieved about the quality of the physical stores, but they open up. Check the model history low price, suddenly soft again. Now the physical store and online shopping guides are also blowing their own cattle X smashed each other, it is even more common to consumers. Among them, the reason is that ordinary consumers do not have the eyes to see through them. Today, Longxiang Tianchen Technology understands its understanding of the entire industry and uses Samsung TV as an example to explain to its valued friends what it takes to identify LCD TVs.

One, about buying

Purchase channel selection

Although I've been working hard on O2O, I'm still asking you not to believe in physical stores and B2C platforms. Do not buy blindly with such thoughts as "Running monks and temples" and "How can people lied to me if they have strength?" Sham Shui Po also has conscience sellers, physical stores also have sub-filled profiteers, knowing people is far more knowledge than knowledge. We can buy by any means, but remember, don't be superstitious. Remember the word "rational consumption."

So here I don’t recommend any first-priority purchase channels for everyone, and everyone’s choices prevail.

About arrival inspection machine

In the previous article "SAMSUNG Samsung 65KS8800 Unpacking, Testing, and Simple Evaluation," I briefly touched on the arrival inspection.

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However, because it is not important, there is no detailed explanation. Let's talk about it here.

First of all, let us see a few pictures.

Because there are no complaints in the online reports caused by the courier or the logistics side of the box open electricity inspection machine. B2C platform is still the case, a treasure naturally no need to mention. In fact, the heart to heart than that because the buyer did not check the logistics side, the logistics of the problems that arise after that (for example, smashing broken screen), the seller does not know if you are not your child bear kick or broken logistics. Even if you know that it is logistics responsibility, it cannot be proved that the division of the responsibilities of these three parties will be very chaotic. This will lead to all sorts of irresponsibility. Then when your grievances will pour out the Yellow River water, you will not be able to wash it.

Therefore, regardless of how the seller said, do not control what platform, must be when the logistics side of the box power inspection, on-site inspection problems on the spot to handle, do not let the test directly refused, let him roll rough. (As for sellers, they often say that the problems caused by self-opening are not responsible. If you don't give installation or the like, you have to listen to it. Don't open the box on the spot, etc. Later, it is more troublesome to find the broken screen. Moreover, there is a factory after-sales and a factory after-sales installation. The warranty does not look out of the box, see the serial code invoice.)

summary

Regardless of platform purchase, as long as it is a formal platform, it does not matter, but we must make sure that we receive a good machine, even if it is a cottage, we must be able to see big sister.

Second, about the inspection machine

To the topic. After we have determined that we have received an intact machine that can be lit normally, we can use a cordial tone to wait for the delivery person who has been inspected for a long time to say "You have worked hard" and let him go. . Then it is a deeper test.

1) Look at the appearance

Observing the exterior of the machine is the simplest method of detection. In general, no matter how the rework machine prototype is repackaged, there will always be some clues. For example, the sealing tape of the packing box (some merchants on a certain treasure will also unpack and check the machine after arrival), the screws on the back shell, the barcode labels on the back of the body, and the frame of the fuselage Protective film and so on.

Here we need to focus on the bar code label sticker behind the fuselage, please carefully watch it there is no trace of secondary paste. Then take a picture with your phone or take notes. We will use it later. That's right, it's the picture below. Remember the string in the red box.

Here I tell a real story. After I told the Samsung TV user group that I had a TV test, one of my classmates sent me a picture of the following.

The marked position of the arrow in the figure has obvious imprint marks. This was actually branded after Samsung returned to the factory for repairs, so this is a grade machine. Samsung will be divided into three levels of ABC according to the severity of the machine's problems. A-level products generally do not have much problems and are invisible to the naked eye. Class B products may have minor scratches on the outside. Grade C is the most serious of the grades, and there will be a branded imprint on the body shell. These grades are generally not sold, most of them will be digested out of the market, and foreign sales must be informed to consumers. Like this group of friends, it's that cheap money is blacked out by bad profiteers because he does not know that he is buying a grade product.

2) Check the serial number

After watching the outside of the fuselage and ensuring that there are no problems, we turn on the TV and tune out the internal string for comparison. (The system strings are not the same for each brand, so we can find it by ourselves. Here only the Samsung 55H6800 is taken as an example.) The system serial code of Samsung TV is hidden in the "Project - Support - Contact Samsung - Second Page" position. .

At present, we have achieved two yards.

About the fuselage string need to talk about it. Each TV has a unique serial number, and the serial number is equivalent to the TV's ID card, so its role is also very small. Machine installation, warranty. After the manufacturer sells the door, it will record and report it. So if you suspect that your machine is an installed prototype or repair machine, you can call up the system serial code, and then call the manufacturer's after-sales phone to check.

3) Engineering mode

In the last article, I also talked about how to enter the project mode to view the TV information, but at the time it was panel information. Here the engineering mode information is used to determine if the machine is tricky. (Samsung 55H6800 is still used here as an example. The brands are not the same. You can find out by yourself).

First of all, we need a full-key remote control, and in the state of TV shutdown, press "display-item-mute-power-on" in the order shown in the figure. Then the TV will turn on and the screen shown below will appear.

Then select SVC-INFO and the information in the figure below will appear.

Here, we have seen the familiar string of the fuselage, our TV has been "three yards in one."

There is a bunch of other information. The fourth item "Panel Display Time" shows the time of use of the machine. The new machine is 0.

Of course, some value-friends will say that the engineering mode can be reset, and the machine's usage time will also become 0 after reset. Here to teach everyone how to check whether the television is reset (profiteers do not come to cut me)

Or engineering mode, we select "Option", and then the information in the following figure appears.

The positions indicated by the arrows are the number of Smart resets and the number of resets of the engineering mode. If you see a number larger than 0, you can be sure that you have something tricky. In addition, "Factory Entry Number" also records the number of times the machine entered the engineering mode.

PS: Do not mess around with the engineering model. Look at the information. Otherwise, after the sale, it will really disregard you.

summary

The engineering model will tell us what many profiteers will never tell us, but is the engineering model absolutely credible? The answer is still negative. However, the general business and store management managers are not in touch with the level of change project information (if there is, please contact me), so up to here. We can basically determine the safety of landing.

to sum up

In a society with insufficient credibility, we can restrain ourselves from doing evil, but we cannot restrain others. There are always some mice in various circles who pretend to be jujube, which has damaged the reputation of the entire industry. The only thing we can do about this is to polish our eyes and let these bad people have nothing to hide. If you have bought the problem machine, please expose them mercilessly. All right, ask the lighting engineer to cast the light to me, the photographer, to take my justice face.