REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Thursday, 16 April 2020

REPAIR / SERVICING TV ERISSON 22LES61

Technical description and composition of the ERISSON 22LES61 TV, panel type and applicable modules. The composition of the modules.
ERISSON LED
Model: 22LES61
Chassis / Version: 5800-A8M350-0010
Panel: 1080p Full HD, 1920x1080
MainBoard: 5800-A8M350-0010
IC MainBoard: CPU: MST740KE-LF; SPI Flash: 25X80;
Tuner: HFT-8F6 / 125CW
Specifications 22LES61
ERISSON 22LES61
General repair guidelines for TV LCD LED
TV ERISSON 22LES61, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain probability that the power module is defective and needs repair. Sometimes with similar manifestations a problem may occur only in the absence of processor power, which is typical for certain ERISSON models. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
In cases where the ERISSON 22LES61 TV has lost its image, and the sound is there and all the other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the panel 1080p Full HD, 1920x1080). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In some cases, they require checking or replacing (if necessary) the elements of the MB board (SSB) - CPU: MST740KE-LF; SPI Flash: 25X80; . In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
In cases where there is no tuning to the local television channels, make sure that there are supply voltages at the terminals of the HFT-8F6 / 125CW tuner.
It should be remembered! Attempts to repair the ERISSON 22LES61 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
FIRMWARE FOR SPI FLASH  ----------->   ERISSON 22LES61 , Main: 5800-A8M350-0010, Panel: 1080p Full HD, 1920x1080

 The appearance of the MainBoard 5800-A8M350-0010 is shown in the figure below:
5800-A8M350-0010
5800-A8M350-0010 can be used in TVs:
ERISSON 22LES61 (Panel 1080p Full HD 1920x1080), ERISSON 24LES61 (Panel 1080p Full HD 1920x1080).
Main features of the ERISSON 22LES61 device:
Installed matrix (LED-panel) 1080p Full HD, 1920x1080.
The required supply voltage for all nodes of the TV ERISSON 22LES61 provides a switching power supply.
MainBoard - the main board (motherboard) is a 5800-A8M350-0010 module, using CPU chips: MST740KE-LF; SPI Flash: 25X80; and others.
The HFT-8F6 / 125CW tuner provides TV reception and channel tuning.
Trademark: ERISSON, Model: 22LES61.
Briefly from the TV: LCD, 1080p Full HD, diagonal 22 "(56 cm), has HDMI, backlight type: Edge LED.
The composition uses MainBoard 5800-A8M350-0010 and an LCD panel (matrix) 1080p Full HD, 1920x1080.
Technical description
ERISSON 22LES61 TV with a 1080p LCD display, diagonal size 22 "(56 cm) in 16: 9 format. The LED-panel of this TV is equipped with LED backlighting - Edge LED. The design and technical capabilities of the TV include watching programs and movies in high HD quality at a resolution of 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p,720p, 1080i, 1080p. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART, RGB, VGA, HDMI. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
Overall dimensions: With stand 769x536x196 mm, Without stand 392x260x40 mm.
Attention! The 1080p Full HD, 1920x1080 panel of an ERISSON 22LES61 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.
Posted By: FRANK at 06:13
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