(This article has more pictures, the first half is open, the latter part is a short review. Drag the right scroll bar to the middle of the page to quickly jump to the evaluation content)
The winter is approaching, the sunshine is shortening, the temperature is lowered, so more free time is spent at home and needs a TV to pass the time. For this reason, the low budget and low expectation have become my buying direction. After continuing to focus on Zhang Aunt for a while, the protagonist of this article: Panda LE65N88S-UD 65-inch Samsung 4k LCD TV, gradually being included in my watch list, coincided with the historical low-cost news, did not hesitate to order .
Thanks to Jingdong's strong logistics system, I am here at 7th-line Xiaoshan Village. I received the goods in the morning after the order was placed in the morning. I used the factory's customer service to make an appointment to install it. Unpacking, putting on the wall, signing the bill, charging (50 yuan is considered to be fair price), everything is agile, and I did not have time to take photos carefully.
List of charges
Outer box, relatively low-key.
There is less information at the seal, and no information such as origin/factory date is indicated.
Random attachment list: two base brackets, all metal material, texture is still acceptable; manual warranty card is complete, with two av lines; remote control face value in general, but the button is sensitive, crisp and soft feedback, better than the feel of telecommunication gift a lot of.
Bare-metal screens have a slight mirror effect under power-off conditions, showing deep darkness and inevitable reflections. The screen is soft and the fingers will have water ripples. There are white warning labels on the top, bottom, left, and right sides of the new aircraft. All of the evaluations in this article did not reveal them. (At the time forgotten to shoot, make up a screen reflection effect picture)
The body adopts a narrow frame design and the metal sandblasting process has obvious gaps in some areas. The overall use of three-dimensional color design within and outside the box, close view texture is poor, easy to fade, far from the overall harmony is not bad. (Not taken when out of the box, after the completion of the map)
The back of the fuselage is made of plastic material, and the heat dissipation port is designed rationally. You can see the main board fly line through the gap. The interface layout of the airframe is a traditional layout, and the interface design is reasonable. There will be no usb interference. The aircraft is equipped with hdmi2.0 interface, usb3.0 interface power supply measured to meet the continuous read of 2.5-inch mobile hard disk.
The TV entity power button is located on the lower right side of the body and is easy to find. The lower left side is the power light. After the power key is turned on, the front light of the TV is not turned on. The light is always red, and it turns off automatically when the power is turned on. Any key on the remote control can trigger the red light to flicker. This design can be considered humane.
The wall-hanging process was skipped. After the TV was combined with the white latex paint wall without any decoration (don't ask me why I didn't decorate it, I wouldn't tell you because of poverty). The overall harmony was considered satisfactory.
Because the thickness of the bracket and the TV are thick, the thickness is not ideal from the side, but it is not unacceptable.
Power on, boot, first display a static logo Panda, about 8 seconds into the boot animation (Figure, in fact, is to read the scroll bar), into the desktop cumulative use of 25 seconds, faster than expected, after all, Android, boot Speed ​​expectations are not high. (When you use it for the first time, the Setup Network Wizard will appear. Use the remote control to easily complete the operation.) There is no advertisement, no push, no sound during the entire boot process.
The default home screen is iQiyi. There is no live channel, because the player does not give members, so on-demand content must endure long advertisements. Even more unbearable is that switching to the movie page, 9 out of 10 movies are VIPs. Charging resources, think of money as crazy. This kind of real (ji) software style, I will not map, so as not to disappoint.
You can switch between other home screens with the left and right buttons on the remote control.
Take a look at this children's channel. Resources include: children's songs, nursery rhymes, idioms, nature, study, etc. Some of the content is pure and free, low-definition video, clear voice, no advertising, fast buffering. The other part, such as classrooms, is a charging resource. The fees are very expensive and pit money is not discussed. In general, this feature is still available, especially for families with young children.
Another more common interface is the list of all programs. This contains some of the pre-installed procedures, such as great wisdom, can not be uninstalled can not be disabled, but do not pop the window does not push, not too annoying. The system does not have a built-in browser. The first time you install the store/desktop Launcher application, you need to go through a USB flash drive, and then it will be the same as the normal installation box.
There are 4 shortcut keys on the remote control, but the method for binding the application to the shortcut key cannot be found, so each time you want to open the self-installed application, you need to press the remote controller one level at a time to enter (one of the failures).
The TV's input signal source is made into a separate home screen, which can be viewed with the remote control. It is worth mentioning that Panda TV can remember the input source, that is, if an external box is used, then every time you open an opportunity to automatically enter the box content, you don't have to look for a menu switch on the TV.
On the built-in Android settings interface, you can set fewer items.
Then put a random gift box out of the box, because it is a gift, there is no high expectations. In fact, a single appearance of good value, mirror paint material, can be wall-mounted, with remote control.
At this point, the unpacking section ends.
In summary, the value is fair, the design is reasonable, the craft is general, and the ease of use is good.
/ Although the aunt doesn't like split lines, I still have to show my face/
Evaluation section:
Since I was in contact with large-screen LCD for the first time, the evaluation knowledge was lacking, and there was also a lack of horizontal machines of the same type as a comparison. All of the following remarks were based on my subjective feelings and were for reference only .
A. Basic screen quality
1.1 From the easy start, the first thing to test is true and false 4k, because the official page has never mentioned RGB, so there is still some concern in the heart. Without reliable shooting equipment and macro lenses, you can only shoot at a good angle.
The result is obvious, no white pixels, non-rgbw screen.
Then test whether it is true 4k or 1080p, directly use the common resolution test chart.
Clear lines, sharp text, 4k resolution test passed.
1.2 Screen leak test. The external environment turns off the lights at night, and the high ISO holds the AI ​​block to shoot, so the picture is slightly more palatable than the actual perception.
There are different levels of light leakage in all four corners, but it is not obvious. However, there are 3 hidden corners in 3 of the 4 corners. In the actual experience, the light leakage is hardly noticeable. However, the dark corners slightly affect the perception.
1.3 Color balance (pure color) test.
It can be seen that in all cases of solid color, there is a case where the center brightness is high, especially in the blue state.
1.4 color scale test.
Dark gray to black color grades are excellent, light gray to white color grades are poor.
1.5 color saturation and color over-testing.
Saturation can't be judged as good or bad, and the transitional coherence is not bad. There are no obvious vertical bars.
1.6 Jitter test.
Actually no jitter (no flash light bars), limited by the camera, the film is not good, the actual experience of this excellent.
1.7 Dynamic backlight/Region control test.
When the dynamic backlight is turned on/off, the overall backlight changes when the screen is observed with the presence/absence of small white blocks on the black background and the movement is generated. The results show that the dynamic backlight exists, but the light and dark changes in the overall backlight, and there is no partition control light blessing.
1.8 black and white contrast. (Invoke the built-in screen saver image, non-test software generation, found GB and Gb yet, the manufacturer JS exposed the nature)
Backlight brightness of 100 to watch this picture, extremely dazzling; the backlight down to 50, barely able to accept, look for a long time or dazzling.
1.9 Visual angle test.
The estimated excellent (non-discolored) angle is within 150 degrees, and a clear color cast appears near 170 degrees (the screen is white). As a television device, this viewing angle is sufficient.
II. Static picture
2.1 People/Landscape/Text, Browser Mode, FHD Pixels.
In order to eliminate equipment interference, a screen shot of a laptop screen is specially placed as a comparison:
In contrast, the characters on the TV screen are not natural enough, and the green plants lack a sense of hierarchy. The text on the text page is slightly weak and the sharpness is not enough. The text part can be solved by raising the sharpness in the menu, but after the sharpness is raised, the character display is even worse.
2.2 Nature / Architecture / People / Still Life / Candy Colors, Player Mode, 4k pixels.
It can be seen that the pixels of the picture source file are increased, which has a significant effect on image quality improvement. The figures in this series of figures are natural and the blue effect is excellent, but the white part is white and the details are lost. The best is the performance of candy colors, which can be described as excellent.
2.3 People's face details, player mode, BD/1080p video source, mainly test the effect of 2k to 4k.
The facial details of the characters on the screen are fairly good, the colors are accurate, and the layers are clear, but there are still problems of losing details in the highlights.
2.4 facial details, player mode, 720p video source, the main test 1k 4k effect.
The source of the movie is a 4.4GB 720p movie. The theoretical image quality should be acceptable. However, I will not comment on the actual results. 100% no picture quality processing chip! Welcome to see the students using their own television to compare tests.
Three. Dynamic picture
3.1 The dynamic picture is difficult to present with the actual perception of the picture, so this part is completely subjective and does not give any details. The following pictures include: live broadcast by TV stations, video on demand (usually lower than the 720p/4.4GB standard for testing above).
Personal experience: The subject of a small movement in the picture (such as football) is compared with the subject of a large movement (such as a running animal, a person under the lens stretching switch, a singer in the above picture), and a smear of a small object. Obviously, it hardly affects the visual experience. The sense of smearing of large objects is slightly heavy, and when severe shots are frequent, there is a feeling of dizziness and eye fatigue.
Subjective sensations also have a great relationship with the level of the source code rate. High-rate programs (such as ultra-clear on-demand programs), because of their higher frame count, less smear, low-rate programs (such as live broadcast), Due to the fact that the number of frames itself is already low, the effect of the playback is very poor.
Four. Hardware performance
4.1 Decoding capabilities
Constrained by the speed of small pipettes in remote mountainous areas, this test has only limited sources. They are: 4k video, bd/1080p source, 1080p high rate, 720p.
Use the built-in media player/Kodi player respectively, and the source files are respectively placed in usb2.0/usb3.0/samba (newifi official firmware comes with usb2.0 interface), and the network uses the cable/wifi test respectively.
Conclusion: This machine does not support decoding dts audio track; 2.4G wifi bandwidth is sufficient to support nas 4k playback; built-in player decoding capability is strong, there are some problems with Kodi compatibility.
4.2 System fluency
Are single-process operation, unclear memory, TV common software (the top five television stores are ranked in the top 5 are tested) run very smoothly, without the slightest lag. The hardware of the machine is the A53 core of the CPU, which is higher than the A7 chip of the God Box (telecom 4k set-top box).
However, in the daily operation, there have been several crashes, the specific performance of the freeze screen, press the remote control volume / menu / back / home no response, press the shutdown button to accept the shutdown command, but according to the severity of the crash Wait for 3 to 10 seconds to shut down the black screen.
4.3 Games
I am very sorry, because I was really uninterested and I have not tested it.
4.4 Other functions
Miracast, the test was successful, the sync speed was ok with the screen, and there was no disconnection within 15 minutes of the test.
Dlna/airplay, not supported.
Listen to it alone, one of the function menus. Press it to completely turn off the backlight, leaving only the sound. Press any button on the remote control to return. There is a certain practical significance.
Sharpness, one of the function menus, 0 to 100 adjustable, for noise reduction processing for low 4K signals, the actual effect is similar to the soft light and sharpening filters in PS, it is recommended to adjust to 0, otherwise it is highly likely The figure's skin is full of pockmarks.
Image Noise Reduction/Scheduled Shutdown, Function Menu #2, Sorry, these two features were not tested successfully during my test and have no effect.
V. System BUG
The following three system bugs have been verified with the manufacturer's customer service center/area after-sales service center. Customer service indicates that these minor issues do not affect daily use. If you have questions, you can call the official customer service to verify.
5.1 When using the built-in system, the remote controller menu key cannot be used.
Some of the function menus mentioned in the previous section, as well as image adjustment functions (such as brightness/contrast/saturation, etc.), are not programmed into the Android settings. The only way to do this is to click on the remote control's menu button to perform the selection adjustment. Pictured:
But the menu keys cannot be called in the built-in system (including the pre-installed app and the user app), which means that these parameters cannot be adjusted when using the built-in system.
5.2 System does not have hdmi overscan switch
For hdmi overscan students who are not yet clear on what they mean, you can refer to this article first:
The hdmi overscan of the original firmware is turned on by default. When some hdmi input sources with imperfect drivers are connected, the image displayed on the screen is incomplete or cannot be displayed point-to-point. As shown in the following figure, the TV cuts up and down the left and right sides of the original image by about 10%. All built-in zoom modes have been debugged, and the screen cannot be displayed properly.
If the HDMI signal input source is a desktop computer, the graphics card management program can be used to disable the overscan when the PC graphics driver is perfect. However, there are quite a few devices in reality that are not perfect, such as: low-level versions of Macbooks and low-level versions of Mac OS, desktop PC graphics cards that have to be driven down for a certain game, and TV boxes with inadequate functions.
If the manufacturer can add this switch function in the firmware, then any of the above imperfections will not affect the final result. According to Google, such brands as SONY have built in this switch.
5.3 TV does not have engineering mode
Most brands of TVs can use specific remote control buttons to enter the engineering mode, where you can view additional information such as time of use, panel information, etc. Individual brands can even adjust the refresh rate, rgb channel, gamma curve, etc. These options are for certain Experienced users can enhance the experience. At least, the presence of this type of model may solve the simple problem of system failure due to system crash (such as the Android phone's long press power + home forced restart).
But this Panda 65-inch TV, the manufacturer customer service informs, this machine has no engineering mode.
A bit small and not convinced, tried various combinations on their own, and still failed to find the password for the project model. Instead, it has found a way to enter the Android security mode (can be used to solve the failure due to the Launcher can not enter the system): After the boot press the menu key repeatedly to enter the safe mode.
Six. After sales evaluation
All of the above, let me start the meaning of return, originally signed on the day has been found to have a very insignificant dark spots (it may be a group = 4 pixels, the installation master did report, confirmed as dark spots), in order to Successfully passed the return application and started to check the screen again 360 degrees. The results are really new:
In the black screen state, there is a clear horizontal ripple in the screen, and a vertical dark line in the center of the screen, even the slag camera on hand can shoot the effect. However, in the non-black screen state, even if it is 111111 dark gray, there is no such situation, so it is speculated that the reason for the backlight. Since this machine adopts a partition-type direct backlight, the abnormal position of the picture in the figure may happen to be the boundary position of the backlight partition (purely a personal guess).
Followed by the return of the standard process, open the test list, take the door away, after-sale review, arrange a refund. During this period, I told JD.com/manufacturers many times that I was willing to leave a TV. I was only willing to upgrade the firmware to resolve the above 3 system bugs, but I was unable to receive any useful reply and had to return it. Ps, during a communication with JD.com, was informed that JD.com did not provide after-sales follow-up of any TV software and only provided mobile phone software after-sales service. I was also drunk.
Throughout the entire return process, Jingdong/manufacturers actively cooperated and the attitude was good. However, the local sales were relatively slow and the outlets could not be called internally. After being confirmed as non-manufacturers of the contractors (sad and resentment of the 7th-line Xiaoshan Village), they were eventually dealt with. Still basically satisfied.
Finally, in order to complete the small partners who only want to see the results do not care about the process, summed up in one sentence:
This is a workmanship is acceptable, the appearance is not ugly, hardware (this year) enough, the system has BUG low-end machine, high-definition picture is excellent, online video screen to fight character, dynamic is not picky available, aftermarket credible TV.
If I see the news of 3600 send audio, based on the 65-inch 4k which is the lowest price of the whole network, I will use a value. But if it's higher than 4,000 yuan, I will be worthless.