Why is there a black band in the middle of my plasma TV, saying that the buffer board is broken?

Hisense plasma TV.

Possible reasons for a horizontal line in the middle of the screen: 1. The TV circuit has a virtual soldering phenomenon. Workaround:

First of all, it is necessary to find out the position of the virtual soldering of the circuit,After finding the position of the virtual soldering of the TV,Re-soldering the place of the virtual soldering,Connect it well to solve the problem of the phenomenon of flickering light and dark of the image。 2. The TV has a long service life, and the aging and deterioration of electronic components or too much dust in the machine will overheat the machine and cause the components to burn. Resolved:

Replacing the TV with a new one also prevents the aging TV from radiating a lot. 3. The picture tube of the TV is damp or aging. Resolved:

Disassemble the machine for detection, and then replace the corresponding picture tube. 4. The screen drive circuit inside the TV has a fault caused by virtual welding. 5. The switch part of the AD board in the TV is burned out.

Solution:You need to let a professional master disassemble the machine for inspection and maintenance,If the TV is still under warranty,Send it to the TV brand repair shop to warrant。 6. There is an interference source next to the TV.

Solution: Remove electrical appliances and other devices with magnetic field interference next to the TV.

1. The field output block is open or damaged.

2. The field output power supply DU resistor is damaged or welded.

3. The field output capacitor is damaged.

4. Poor contact of the field deflection coil plug.

5. The circuit of the field oscillation part is damaged and the field is stopped.

This is a common failure of ordinary TVs, and if you are unable to do so, you can go to home appliance maintenance to repair it.

Why is there a black band in the middle of my plasma TV that says the buffer board is broken? A black band appears on a plasma TV like this, which may be caused by the failure of the capacitor of the buffer circuit, and replacing the capacitor can solve this fault.

Why is there a black belt in the middle of my plasma TV, is it said that the buffer board is broken? There is a possibility that if this is the case with the plasma, it is that the buffer plate is broken.

Cache board damage treatment:After opening the back cover,Be sure to carefully observe whether the chip of the cache board has obvious burning、Burst,Because Hitachi's series of plasma TVs have almost always been this common problem since they were launched--- cache board is damaged。 Whether it is a home appliance maintenance master or a home appliance user, the cable on the buffer board can be disconnected one by one for testing, when the screen line of the lower buffer bar is disconnected, the upper part of the boot screen can be normal, so it is judged that the lower cache board is damaged.

After starting, after the red light is converted to a green light, the green light has been lit or flashed 3 times or 4 times in a row, but there is no grating without accompanying sound or with accompanying sound, visually check whether the integrated block on the buffer plate has scorching traces, if the two buffer plates have scorching traces, you need to check whether the Y board has short-circuit components, and whether the connection soft cable from the buffer plate to the screen is abnormal. After excluding the above situation, if there is a sound, you can directly replace the buffer plate.

Maybe there is something wrong with the electrode plate inside, or maybe the electrons haven't been evenly imaged on the screen (this is rare), or maybe the TV series has been shaking? You can put it aside and look at it, and if it doesn't work, you'll have to fix it.

The plasma screen is vertically covered with very thin address lines, each address line controls the vertical direction of a column of sub-pixels to turn on and off, these address lines are connected by more than 10 lines, the lines are controlled by IC and provided by the plasma logic board. If one of the wires is broken or the IC is faulty, there will be a vertical black line, sometimes pink is because a complete white pixel is composed of RGB sub-pixels, if B or G is missing, pink may appear in some screens.

For this problem, you need to return to the original screen factory to separate the screen,Then replace the cable,The maintenance cost and transportation are estimated to be thousands of yuan,Of course, if it is still under warranty, hurry up and find your TV manufacturer to repair it。

The watchtower owner chose to be a satisfactory answer, thank you

Hello, I'm glad to answer for you:1. The signal of the TV is interfered with and causes vertical streaks. Inside the TFT panel, connection issues and static electricity at the signal input.

Generally speaking, the cause can be preliminarily determined by visually observing the defect. 2. There is a problem with the TV signal source or program source, resulting in vertical stripes. The wires formed by static electricity are usually single and do not look that thick.

The thick wire is usually caused by a short circuit, and the input of the TFT internal short circuit signal is short-circuited. 3. The use environment is too humid, which will have a certain impact on the line at the input end and produce line defects. But it's not the only cause.

In this case, after ruling out the reason for your own use, you should contact the manufacturer to solve the problem. Plasma TV screen change is a test of technology,You need to be careful when changing the screen,It's best to find a professional master to change。 Generally, the precautions when changing the screen are as follows:

1. When disassembling the TV, all the wiring should be marked to facilitate the return; 2. Be careful when replacing the plasma TV screen to avoid scratches and other problems. In addition,After the change, you should accept it carefully,Check the picture effect of the TV、Installation effect。 At the same time, it is necessary to keep the evidence of screen replacement, such as invoices and screen replacement, which is a big move, and how to calculate the warranty period should be asked clearly.

There is no basis for words, and it is necessary to use the warranty certificate as the basis.

I hope the above is helpful to you If you are satisfied with me, please give me a thumbs up

There is no damage to the accessories, but the cable interface is deformed by heating. Rearrange and install gaskets, Hitachi plasma TVs are common.

Obviously, black belt door, Panasonic, right? Call customer service.,It seems to be free to change the screen within 3 years.。

Reasons why vertical lines appear on the screen of ionic TV:

1. The screen may be broken, the buffer plate is broken after heating for a long time, and 2. The cable is loose.

The low-end model has low power consumption, so there are few vertical wires, and there is no fan in the high-end model with high power consumption, but there is no fan installed or there are fewer fans, and there are 4 fans inside the high-end VT that can actively dissipate heat, and there are fewer problems as long as you pay attention to heat dissipation, and the vertical wire problem can be avoided.

It is recommended to use the base, not to hang on the wall, and have the ability to DIY a group of fans to blow the back of the machine to cool down.

The LCD screen has vertical stripe earth color and white vertical bar shadow, everything else is normal, what is the reason?

If it's like you have in the diagram, and it doesn't come and go, it's a problem with the module or module connection, and it's usually a problem with the module connection. I see that you are a line, and there is a display, plus the width of that area is about the same as the width of a module control, that is, there is a problem with the module, and the discharge cannot be controlled, this can be repaired.

You need to describe the nature of the shadow in detail, such as whether it is vertical or horizontal, how wide, color, etc. Depending on these, it may be related to the XY driver board and the screen.

It should be damp.

Take care to maintain ventilation.

It may be that the screen is broken, so it's a plus.

This is also the case in my family, so I let the professionals come to see it. In addition, the 800** attitude of this manufacturer is very bad, and it does not admit that there is a quality problem. I won't consider using this brand again in the future.

In general, this kind of failure should be the fault of the buffer plate. Specifically, it needs to be tested by professional maintenance personnel to be determined.

For example, there is a failure of the screen or upper screen circuit. If it is within three years, hurry up and contact the after-sales service! If it's been more than three years, then make do with it, it doesn't hurt anyway.

This is a product left over from the production of TV panels, which is a substandard product, and the thin black line is obvious? If it is obvious that you can ask for a replacement TV. Hope!