Repair of digital television set-top box oriel 750. Repair of digital television set-top boxes. Download ORIEL Firmware File
The park of analog TV sets is rather reluctant to give way to digital equipment, gradually occupying "second" places - in the kitchen, in offices, workshops, garages, etc. At the same time, DVB-T2 set-top boxes are transferred. We have already managed to evaluate the advantages of the latter, while 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 a switching power supply - most of the cases of failures are associated precisely with a malfunction of the power supply, and a failure of the power supply can lead to such serious consequences that it will be impossible to repair the device. And yet, using the example of two set-top boxes for receiving digital TV, the possibility of their self-repair will be considered here. The first device was TVK 3101. When turned on, the image had strong distortions, periodically it completely disappeared. 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 prefix. This device did not respond to commands from the remote control, the indicator barely shone red.
After opening the cases of the consoles, 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 attachment, special care should be taken - the primary power supply rectifier of the PSU 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 the pulse transformers and the plugs of the power cords. Before working with the device board, these capacitors must be short-circuited through a 51-62 kOhm resistor.
Both defective capacitors turned out to be almost the same - 1000 uF, 10 V. The picture shows one of them. The fact that its lid is barely deformed in appearance should not give you the slightest confidence in the serviceability of the part - even if some part of the capacity is 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 one is shown, and with the same dimensions. Of course, defective parts should be replaced with new ones, not used ones - otherwise, the repair will have to be repeated soon.
After replacement, turn on the prefix - the indicator lights up brightly, the device responds to the remote control commands, the image is stable. But the repair is not over yet ...
There are traces of flux on the board - solder paste, rosin ... With such a coating, high-frequency currents can quite easily pass wherever they want. As a result, we can get an unstable image, noise, etc. over time. trouble. Therefore, carefully wash the board with a cotton swab dipped in alcohol or acetone. After such cleaning, wipe the board with a dry cotton swab
We put the board in place, check - it works.
Now we assemble the prefix completely and check the performance again.
We check the second device in the same way - the device is working normally, the repair is complete.
In conclusion, I will add that the quality of the antenna amplifier power supply also strongly affects the operation of the set-top box. So, with insufficient capacity of the filtering capacitor, signal loss is possible - there have been cases of complete disappearance of the channels of the second multiplex. To recognize a malfunction of the antenna power supply unit, it is enough to replace it with a DC source with a voltage of 9-12 volts (for example, a Krona battery or a battery from a computer uninterruptible power supply). If the reception quality improves, then the antenna power supply should be replaced 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 receiver overview - factory information
The receiver is manufactured in China, by order of the Russian company.
All information about the manufacturer is on the box.
oriel750 - kit, apparatus, remote control, manual
The package includes:
1. apparatus.
3. batteries.
4. operation manual.
5. packing.
oriel750 - general view
1.The body is made of plastic.
2. The device is not large.
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. RF input - for antenna connection.
2. HF output - for connecting a second device.
3. HDMI-out.
4. tulips.
5. power plug.
oriel750 - device + remote control
there is a usb connector on the front panel.
through it you can connect external media with which:
1. You can listen to music.
2. you can watch a movie.
3. record music and movies.
4. watch the photo.
oriel750 - remote
using the remote control you can:
1. switch channels.
2. change the volume.
3. turn off the console.
4. record TV programs.
5. use additional services.
oriel750 - connect to tv
The connection diagram is very simple and straightforward.
You can familiarize yourself with it on our connection diagram.
oriel750 - troubleshooting
main faults:
1. the indication does not light up. (check if there is electricity in the socket, check if the plug is connected to the socket)
2. There is no sound. (check the cord, check the volume)
3.No response to the remote control. (check batteries, check if there is any obstruction in front of the IR sensor)
4.No signal. (check if the antenna is connected)
oriel750 - specifications
the frequency range that the tuner is capable of receiving: 174-230 MHz, 470-862 MHz
signal level 15-70 dbm
mains voltage - 220-240 V, 50-60 Hz
power consumption - 8 watts.
Updating the software (firmware) of your equipment is done only in cases where there are any problems, or the update will add useful functions to the device. It is not recommended to flash devices unnecessarily. in the process of updating the firmware, there is a possibility of equipment failure... If you are not sure that you can handle the firmware update yourself, we recommend that you contact the appropriate service center to qualified specialists.
Download ORIEL firmware file:
Oriel 810 Receiver Firmware File - (version 3.4) This update is only applicable for receivers with serial numbers 81111200001 to 81111205050 and 81120100001 to 81120106060..
The firmware file for the Oriel 820 receiver - (version 1.0 from 01.08.2012). This update is only valid for receivers with serial numbers 82120100001 to 82120105280..
Oriel 710 receiver firmware file - (version 1.3.5). This update is applicable only for receivers with serial numbers 710121000001 through 710130211200.
Oriel 720 receiver firmware file - (version 1.3.5). This update is only applicable for receivers with serial numbers 720121000001 through 720130202200.
Oriel 910 receiver firmware file -.
Oriel 920 Firmware File -.
Official website of the manufacturer:
You can check the availability of newer software on the manufacturer's official website -
Questions about ORIEL brand swing equipment, you can ask through.
How to update the firmware:
Proceed as described in the user manual. If this information is not in the manual, then contact the technical support service for your equipment.
Useful links:
In order to unzip the firmware file, you may need an archiver program. One of the most popular is.
For manufacturers:
You can add the current software for your equipment by writing to us through.
Digital TV set-top boxes have recently entered our lives, but apart from the positive aspects, they cause many complaints from the quality side. It is still too early to talk about any statistics and how much they run out of business, but now there are quite a few cases of failure of these set-top boxes for TV.
I will list a few of the most common malfunctions in which the console refuses to work:
- the red indicator is on;
- the red indicator flashes;
- the set-top box restarts and does not turn on;
- writes "ON" and does not turn on (green light is on);
- the tuner does not turn on after flashing;
- does not turn on from a long distance.
The reasons why the tuner does not turn on can be divided into several groups:
- Malfunction of the electrical circuit;
- Firmware failure;
- Remote control malfunction.
In case of any breakdown in the circuit, it can manifest itself in different ways, but the worst of all is that with the same manifestations, the reasons can be completely different. For example, when the tuner is connected to the network, a red light (network indicator) is on, but this does not go further, that is, the set-top box does not respond to the remote control and control buttons. This case can fit any of the groups listed above.
The purpose of the article is not to analyze the device of the set-top box and how to repair it, but to give an idea of \u200b\u200bhow, at the first stage, try to independently diagnose and draw any conclusion about the malfunction. If there are no repair skills, you need to contact the repair service, since repair requires not only knowledge, but also special equipment.
MALFUNCTION OF THE CIRCUIT
It all depends on the quality of the circuit elements, therefore well-known brands producing DVB T2 tuners that use a higher-quality element base are more preferable.
The easiest way to diagnose a breakdown is when the indicator (light on the panel) is off. This clearly indicates a malfunction of the power supply.
If the light is blinking, this may indicate a malfunction of the power supply unit and the chassis (this is the main board with a tuner and a 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, all the same elements of the console may be to blame. You can read about such a repair. If the display reads "ON" and the indicator is green, and the set-top box does not turn on, then this may also indicate a circuit malfunction.
FIRMWARE
As already noted above, in some cases it is rather difficult to separate what exactly is the cause of the malfunction of the firmware or the electronic part of the circuit without additional measurements. But if the tuner does not turn on after the firmware, then the conclusion is unambiguous, it is she who is faulty.
Here you need to warn that you need to be careful when carrying out the update, follow the instructions and install exactly the firmware that relies on your device.
In case of such a malfunction, you need to contact the service, although not every center undertakes such a repair.
REMOTE CONTROLLER
On many cheap models of set-top boxes, there are no control buttons on the front panel, and this is a significant disadvantage, since if the remote control fails, you lose the ability to control the tuner at all. This has already been written on the site in the article on choosing a prefix.
Therefore, if the remote control from the digital set-top box does not work, only the purchase of a new one or a master will help to identify. Unfortunately remotes for tuners are still rare and quite expensive.
It happens that the tuner does not turn on from a long distance; both the tuner and the remote control itself can be guilty here (which is rare). You can try to replace the batteries, but it won't help - buy a new one. If in this case there is a negative result, then the prefix is \u200b\u200bto blame.
Once again, without special skills, it is difficult to solder the parts on your own, which can cause great harm to the board.