How to connect a universal scaler, compare it with a matrix and other devices? How to connect a matrix, buttons, speakers and cables? This article will help you find answers to such questions.
Get to know the scaler device
Universal scalers are based on one chip - Hi. Consider several models from the most inexpensive to more budget:
- MT6820-B.
- MT6820 – MD.
- LA.MV9.P.
The first model in the package has a ribbon cable and two buttons. Among the proposed types, this is the most budget option. On the device itself there is a connector for connecting the inverter, jumpers to select the operating mode, jumpers to select the voltage supply, a matrix of 5 volts and 3.3 volts.
To connect this scaler to the matrix, you must first view the information on the product sticker. 4 parameters are important:
- Matrix Resolution
- Supply voltage.
- Number of bits.
- The number of channels.
This matrix has 6 bits, 1 channel, a supply voltage of 3.3 volts. The jumper must be switched to the appropriate mode, select the resolution settings.
We select the indicators that are closest in value. We need to take a jumper in which the number of bits matches. We set the jumper in mode S.
Such a scaler has advantages in terms of cost. This device has many disadvantages. First of all, the presence of the loopback of the old interface. Modern laptops use other loops. Additionally, you need to purchase an inverter for power and backlight.
Also, there is no power connector. So, you need to solder the wiring. If the power supply mode of the matrix backlight is different, it is necessary to apply 5 volts, and use a different voltage level for the matrix. This is rather inconvenient.
The biggest minus is that the chip is very hot. Literally after 5 minutes of operation, it turns off itself due to overheating. You will need to use a radiator, only then the chip will work more tolerably. If this is not done, transistors and voltage stabilizers can burn out.
When connecting this scaler to the matrix, you need to glue the radiator. Otherwise, the heating will be up to 50-60 degrees.
Additionally, you need to purchase a cable. In order for it to work, it will be necessary to replace the location of the contacts. After that, universal scalers with universal controllers and a matrix begin to work.
Power is supplied within 8 volts. When you turn on the power through the universal scaler remote control, the presence of an image is noted. Another drawback of the device is the menu only in English.
Using this scaler, you can make a monitor from any matrix.
Description of the MT6820 – MD scaler
Since the device is similar to the previous one, its problems are similar. This is an overheating of the chip, which is the same for two devices. It is noteworthy that the kit is already offered a more modern cable.
If you purchase it on Chinese sites, a scaler selection service is available taking into account the parameters of the matrix. Then the seller will select the right option and send it with the jumpers already set. But it is important to consider that this service is paid.
Check the performance of such a scaler. We connect the cable in accordance with the marks on the contacts, and then the backlight control connector of the matrix and power. We supply power, start the device - an image has appeared. The minimum supply voltage is 8 volts. The advantage of this model is the speed of connection.
TV Scaler Model Description
The scope of delivery of the universal la mv 9 p v59 scaler includes a board, a remote control, and a phototransistor. Separately, you need to purchase a set of buttons and a cable. This model has optimal performance indicators.
It is noted that the chip is heated to operating temperature. There is a sound supply function. This is a digital tuner, since there is no protective cover.
Variety of models
There are a lot of universal scalers. From quite functional ones that need to be flashed before connecting to the matrix, to more budget, small-sized options on jumpers. After setting the jumpers, you can get the required permission.
When testing a device such as the universal monitor scaler LA.MV9.P, it can be seen that it works well. The current consumption is 0.8 amperes, the menu is in Russian. The image is normal in brightness, contrast and color temperature. Significant advantages of it are the presence of three inputs, including audio. It is also noteworthy that the device is already flashed, no need to suffer with jumpers.
How to install a scaler?
Everyone who repairs monitors is faced with the need to select and install a scaler.
The essence of connecting to the matrix is as follows. Take a laptop matrix with one backlight and an LVDS interface. In fact, there is only a matrix, a laptop power supply, a backlight inverter and a cable for connection.
You can re-twist the original cable yourself or purchase it ready if you do not want to lose time. It is allowed to use several lamps from one inverter.
To save time for flashing, you can take a scaler, which is connected and set by jumpers.
To connect it to the matrix, some manipulations will be needed.
The power of this scaler is 12 volts. You can use the appropriate power supply, connect control buttons and a universal inverter to the device.
The circuit is easy to assemble, without the use of a soldering iron and other tools. Next, we connect the matrix, LVDS cable and make sure the image is available.
When you turn on the button, a screensaver in Chinese appears. This method of connection is the simplest.
Other ways to connect a scaler
If you take the 5-volt universal scaler of the LA.MV9.P. monitor on jumpers, the on-board power supply of the controller for which is 5 volts, you can also connect it according to the scheme described above.
When connecting, an LVDS cable and buttons are also used. The difference will be that the inverter requires at least 12 volts, and we only have 5.
You will need to complicate the circuit and use a buck converter. We take 12 volt power through a DC-DC - step-down converter. We connect the scaler itself, and the power required to connect the inverter goes almost directly from the line to the converter.
Signal data is taken from the scaler to adjust the brightness. You can use a converter with a voltmeter. We connect the inverter and the control board itself, after setting the required resolution parameters.
It can be seen that the situation with jumpers is quite simple. A little time, and the scaler is ready to go. Turn on and see that the signal appeared. So, all the manipulations are performed correctly, and the device is in working condition.
Universal inverter
How is the power of universal injectors provided? There are 12-volt models with standard 5.5 x 2.5 socket sizes. They are often used in power supplies for monitors, security systems and video surveillance. Therefore, problems with the selection of the plug should not arise.
If the matrix will not consume more than 5 volts, you can use the input to connect a universal scaler with a lower power level, bypassing the voltage converter.
Scaler consumption and power supply capacity are almost impossible to calculate in advance. After all, each matrix consumes its own current. Also, inverters of lamps, speakers, scalers with USB outputs can be connected to this power supply.
Let's say that not only the control board burned out, but also the inverter - the part that is responsible for lighting the backlight. You get a universal inverter that differs in shape and model. The advantage of its use is that you do not need to understand the intricacies of the device of such a product and you can quickly finish the repair.
Installation of a universal inverter takes a maximum of 30 minutes. You will need to use 2 signals coming from the input from the control board: turning on the inverter and adjusting the brightness. These modes are signed on the board. You can also determine where the power supply of the inverter itself is located. This is visible on the back of the board.
They are in accordance with the indicated inscriptions. There are also universal scaler monitor controllers.
You will need to bite the jumpers, remove them by evaporation, remove the transformers. The remaining elements we do not need. If necessary, they can be dismantled and a universal inverter can be fixed in their place.
Then you need to take two signal inputs from the scaler. To do this, connect the cable that is sold with each inverter. Solder them to the contacts, if you prefer. Connect power to the inverter at the jumper spot.
So you can quickly mount and connect a universal inverter, control board. The monitor can be restored even in the most severe cases. He will please you with his work for more than one year.
Overview of budget scalers
A miniature version of the scaler can replace 90% of the monitor scalers with a 5-volt input. Such devices will be affordable and easy to use.
You can take the power of the standard unit, apply from it a power-on signal and adjust the brightness of the backlight. It will be possible to use a miniature model instead of a failed native scaler.
This is a pretty convenient thing. It takes up very little space in the monitor case. But to connect such a miniature universal scaler for a monitor to the matrix of a laptop, you will have to try.
The output from the scaler to the inverters must be performed correctly. When connected, the assembled circuit will have small dimensions. It only remains to connect the power supply.
If you are installing a laptop’s inverter or a universal option, you need to select power through a step-down adapter. This is required to get the necessary power at 5 volts.
There can be no direct docking, so you need to try. Connecting the inverter to the rest of the boards will not cause difficulties.
All boards have a 6 pin inverter connector. These data are indicated on the surface of the board. After connecting the inverter, you can start using the device.
Those scalers that are unified on jumpers also have such a connector for connecting the inverter. Miniature scalers have the same operating principle.
Connect buttons
There are a wide variety of buttons. From the most primitive models with 5 buttons with LEDs to models whose cost is higher.
On the back board of buttons, indicators of their functionality are indicated. If you need to connect a cable, compare the K-0 data with the K-0 pin on the board. After such procedures, you can immediately use the device.
Television scalers
In models such as the universal TV scaler, the first three contacts are initially rated at 5 volts. They are needed to connect to the receiver. The kit includes a remote universal scaler. It is necessary for those users who do not like the use of a television keyboard.
If you need to connect a 5-button keyboard, you must skip the first 3 contacts. Then compare, as mentioned earlier, K-0 and K-0.
If possible, it is better to immediately purchase a keyboard for the scaler, which includes 7 buttons and a receiver. You can split the device and install its elements separately.
When connected to a TV-scaler, it is enough to simply compare the universal dvb t2 scaler with its carriage. The contact data is indicated on the board, therefore, it will be possible to assemble such a device yourself. To do this, you can take regular buttons from the monitor.
There are buttons with side output. They are also fairly easy to plug in, since you can completely put them in the button slot. There is a lot of free space. It is almost impossible to make a mistake with the connection.
Connection of LVDS output
An important step is to connect the matrix output. On all scalers, this output looks almost the same. This is a double row comb with a pitch of 2 mm. The first contact is everywhere marked with a yellow, white or red triangle, or simply by the number 1. On cables, this contact is always marked with a colored dot. Usually these are red veins - the first power contacts of the matrix itself.
The cable is connected as follows. You will need to compare the first power contact on the cable carriage and the universal scaler connector.
Connect and gently push the contacts so that they fit evenly and beautifully. Check that no contact comes out. With an oversight, this is possible. Then the signal will not appear, which will affect either the performance of the matrix or the quality of the picture. The other end of the contacts is connected to the matrix.
It is important to remember such a thing as matrix nutrition. On its panel should be indicated the supply voltage in different positions of 3.3, 5 or 12 volts. Do not ignore such information.
Before connecting the V59 universal scaler, it is recommended to check this nuance. There are 5-volt scalers, where jumpers are designed for 3.3 volts and 5 volts. Without knowing these features, devices can be ruined.
Important additions
In addition to conventional monitor matrices, there are laptop matrices with LED-backlight. These are models with 40-pin connectors through which video signal, LVDS and backlight power are connected.
One connector connects to the scaler. We match the contacts, as indicated above. The cable still has a small connector for connecting LED-backlight, which is connected to the inverter socket. Due to the presence of keys, it will not be possible to confuse the scheme.
We set the matrix power, after checking the necessary voltage of this device.
Peripheral connection
Suppose there are small monitor columns. This monitor was taken from the TV. We use one of the boards with a TV tuner or multimedia processor. You can take individual copies - a universal scaler with a tuner and sound output.
There is a connector with the corresponding inscription, which will allow you to properly connect the speakers. You can also connect a TV scaler in the same way.
Some devices have an interesting connector, which is necessary for professionals to have access to source codes and transmitted signals. Connecting a universal scaler after carefully reading the article can be done independently.