Oriel 750 digital set-top box diagram. ORIEL firmware. Download ORIEL firmware file

The fleet of analogue TVs is rather reluctant to give way to digital equipment, gradually taking “second” places - in the kitchen, in offices, garage workshops, etc. At the same time, DVB-T2 set-top boxes are also carried. We have already managed to evaluate the advantages of the latter; some owners also appreciated the disadvantages - the rather low reliability of these devices. As a rule, one of the weakest points of this kind of equipment is pulse block power supply - most cases of failures are associated precisely with a malfunction of the power supply, and a malfunction of the power supply can lead to such serious consequences that repairing the device will be impossible. And yet, using the example of two digital TV set-top boxes, the possibility of repairing them independently will be considered here. The first device was TVK 3101. When turned on, the image had severe distortions and periodically disappeared completely. A few days later, the set-top box began to turn off a few seconds after the manufacturer's logo appeared on the screen.

The second device is the Oriel 740 set-top box. This device did not respond to commands from the remote control, the indicator barely glowed red.

After opening the console cases, it turned out that in both cases the electrolytic capacitors of the secondary power filters were swollen.

It should be borne in mind that when working with the set-top box, special care should be taken - the primary power supply rectifier converts an alternating voltage of 220 volts into a constant voltage of about 300 volts, and this potential remains at the terminals of high-voltage electrolytic capacitors for some time after the power is removed - up to several tens of seconds . In the pictures they are located between pulse transformers and power cord plugs. Before working with the device board, these capacitors must be short-circuited through a resistor with a resistance of 51-62 kOhm.

Both faulty capacitors turned out to be almost the same - 1000 µF, 10 V. The picture shows one of them. The fact that its lid looks barely deformed should not give you the slightest confidence in the serviceability of the part - even if some part of the container has been preserved, such a part will have an increased leakage current, which is unacceptable. When replacing, you should select capacitors with the same operating voltage or with a slightly higher one, as in the picture - instead of a 10-volt part, a 16-volt part is shown, and with the same dimensions. Of course, faulty parts should be replaced with new ones, not used ones - otherwise the repair will soon have to be repeated.

After replacement, we turn on the set-top box - the indicator lights up brightly, the device responds to remote control commands, the image is stable. But the renovation is not finished yet...

There are traces of flux on the board - solder paste, rosin... Through such a coating, high-frequency currents can quite easily pass wherever they want. As a result, over time we may get an unstable image, noise, etc. troubles. Therefore, carefully wash the board with a cotton swab moistened with alcohol or acetone. After such cleaning, wipe the board with a dry cotton swab.


We install the board in place, check - it works.

Now we assemble the console completely and check its functionality again.

We check the second device in the same way - the device is working normally, the repair is completed.

In conclusion, I will add that the quality of the power supply antenna amplifier also greatly affects the operation of the console. Thus, if the capacity of the filter capacitor is insufficient, signal loss is possible - there have been cases of complete loss of channels of the second multiplex. To recognize a malfunction of the antenna power supply, it is enough to replace it with the source direct current voltage 9-12 volts (for example, a Krona battery or a battery from a computer uninterruptible power supply). If the reception quality improves, you should replace the antenna power supply with a known good one.

oriel750 - packaging, general view

The receiver is designed for watching digital TV in the dvb t2 standard

Bright packaging made of cardboard.

Oriel 750 general receiver review - factory information

The receiver is manufactured in China, commissioned by a Russian company.

All information about the manufacturer is on the box.

oriel750 - kit, device, remote control, manual

The package includes:

1. apparatus.

3. batteries.

4. instruction manual.

5. packaging.

oriel750 - general view

1.The body is made of plastic.

2.The device is not large in size.

3. For comparison, we will show the device with a box of matches.

oriel750 - rear view

The device has the following connectors for connection:

1. HF input - for connecting an antenna.

2. RF output - for connecting a second device.

3. HDMI output.

4. tulips.

5. mains plug.

oriel750 - device + remote control

There is a USB connector on the front panel.

you can connect through it external media with the help of:

1. you can listen to music.

2. You can watch a movie.

3. record music and movies.

4. look at the photo.

oriel750 - remote control

Using the remote control you can:

1. change channels.

2. change the volume.

3. turn off the set-top box.

4. record TV programs.

5. use additional services.

oriel750 - connection to TV

The connection diagram is very simple and clear.

You can see it in our connection diagram.

oriel750 - troubleshooting

main faults:

1.indication does not light up. (check if there is electricity in the outlet, check if the plug is connected to the outlet)

2.There is no sound. (check the cord, check the volume)

3. There is no response to the remote control. (check the batteries, check if there is an obstacle in front of the IR sensor)

4.No signal. (check if the antenna is connected)

oriel750 - technical specifications

frequency range that the tuner can receive: 174-230 MHz, 470-862 MHz

signal level 15-70 dbm

mains voltage - 220-240 V, 50-60 Hz

power consumption - 8 watts.

Update software(firmware) of your equipment is performed only in cases where any problems arise, or an update will add useful features device. Flashing devices unnecessarily is not recommended, because... During the firmware update process, there is a possibility of equipment failure. If you are not sure that you can handle the firmware update yourself, we recommend contacting the appropriate service center to qualified specialists.

Download ORIEL firmware file:

Oriel 810 receiver firmware file - (version 3.4) This update is only suitable for receivers with serial numbers from 81111200001 to 81111205050 and from 81120100001 to 81120106060. .
Oriel 820 receiver firmware file - (version 1.0 dated 08/01/2012). This update is only suitable for receivers with serial numbers from 82120100001 to 82120105280. .
Oriel 710 receiver firmware file - (version 1.3.5). This update is only suitable for receivers with serial numbers from 710121000001 to 710130211200.
Oriel 720 receiver firmware file - (version 1.3.5). This update is only suitable for receivers with serial numbers from 720121000001 to 720130202200.
Oriel 910 receiver firmware file - .
Oriel 920 receiver firmware file - .

Official website of the manufacturer:

You can check the availability of newer software on the manufacturer’s official website -
You can ask questions about ORIEL brand swinging equipment through.

How to update firmware:

Proceed as described in the user manual. If given information not in the manual, then contact service technical support your equipment.

Useful links:

In order to unzip the firmware file, you may need an archiver program. One of the most popular is .

Manufacturers:

You can add the latest software for your equipment by writing to us via .

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World Vision T34 set-top box

Consoles digital television They came into our lives not so long ago, but in addition to positive aspects, they cause many complaints regarding quality. It’s still too early to talk about any statistics and how many failures they have, but there are already quite a few cases of failure of these TV set-top boxes.

I will list a few of the most common malfunctions in which the set-top box refuses to work:

  • the red indicator is on;
  • red indicator flashes;
  • the set-top box reboots and does not turn on;
  • it says “ON” and does not turn on (the green light is on);
  • the tuner does not turn on after the firmware;
  • does not turn on from a long distance.

The reasons why the tuner does not turn on can be divided into several groups:

  1. Electrical circuit malfunction;
  2. Firmware failure;
  3. Remote control malfunction.

If there is any breakdown in the circuit, it can manifest itself in different ways, but the worst thing is that even with the same manifestations, the reasons can be completely different. For example, when the tuner is connected to the network, the red light (network indicator) lights up, but it doesn’t go further than that, that is, the set-top box does not respond to the remote control and control buttons. This case can fit into any of the groups listed above.

The purpose of the article is not to analyze the structure of the set-top box and how to repair it, but to give an idea of ​​how, at the first stage, to try to independently diagnose and draw some conclusion about the malfunction. If you have no repair skills, you need to contact a repair service, since repairs require not only knowledge, but also special equipment.

CIRCUIT FAILURE

Everything here depends on the quality of the circuit elements, so famous brands producing DVB tuners T2, which uses a higher quality element base, is more preferable.

The easiest way to diagnose a breakdown is when the indicator (light on the panel) does not light up. This clearly indicates a faulty power supply.

If the light is blinking, this may indicate a malfunction of the power supply unit or the chassis (this is the main board with the tuner and processor) of the set-top box, as well as a firmware failure.

In the case when the device spontaneously, repeatedly reboots and does not turn on, the same elements of the set-top box may be to blame. You can read about such repairs. If the display says “ON” and the indicator lights up green, but the set-top box does not turn on, then this may also indicate a circuit malfunction.

FIRMWARE

As noted above, in some cases it is quite difficult to separate whether the firmware or the electronic part of the circuit is causing the malfunction without additional measurements. But if the tuner does not turn on after flashing the firmware, then the conclusion is clear: it is the one that is faulty.

Here you need to warn that you need to be careful when updating, follow the instructions and install exactly the firmware that is required for your device.

If such a malfunction occurs, you need to contact a service center, although not every center undertakes such repairs.

REMOTE CONTROLLER

Many cheap models of set-top boxes do not have control buttons on the front panel, and this is a significant disadvantage since if the remote control malfunctions, you will be unable to control the tuner at all. This has already been written about on the website in an article about choosing a console.

Therefore, if the remote control does not work digital set-top box, only buying a new one or a master will help identify it. Unfortunately, remote controls for tuners are still rare and quite expensive.

It happens that the tuner does not turn on from a long distance; here, both the tuner and the remote control itself may be to blame (which is rare). You can try replacing the batteries, but if that doesn’t help, buy a new one. If in this case there is a negative result, then the prefix is ​​to blame.

Once again, without special skills, it is difficult to solder the parts yourself, which can cause great harm to the board.