Technical description and composition of the ERISSON 26LEK14 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 26LEK14
Chassis / Version: MST6M181-T8B
Panel: LC260EXN-SDA1 HD
MainBoard: MST6M181-T8B
IC MainBoard: CPU: MST6E181VS-LF-Z1; SPI Flash: 25Q32;
Tuner: CDT-3FC2I2-36
Specifications 26LEK14
ERISSON 26LEK14
General repair guidelines for TV LCD LED
Repair of the ERISSON 26LEK14 TV should begin with a careful external examination of all its components and modules. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
Malfunctions of the power module can be expressed in different ways, for example, ERISSON 26LEK14 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If there is no image when ERISSON 26LEK14 is turned on, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LC260EXN-SDA1 HD panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the lines and connectors.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
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).
If it is not possible to replace the MB (SSB) card, you must check the health of its elements - CPU: MST6E181VS-LF-Z1; SPI Flash: 25Q32; . Defective components should be replaced.
Owners and users of the ERISSON 26LEK14 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> ERISSON 26LEK14 , Main: MST6M181-T8B, Panel: LC260EXN-SDA1 HD
The appearance of the MainBoard MST6M181-T8B is shown in the figure below:MST6M181-T8B
Main features of the ERISSON 26LEK14 device:
Installed matrix (LED panel) LC260EXN-SDA1 HD.
The required supply voltage for all nodes of the TV ERISSON 26LEK14 provides a switching power supply.
MainBoard - the main board (motherboard) is an MST6M181-T8B module, using CPU chips: MST6E181VS-LF-Z1; SPI Flash: 25Q32; and others.
Tuner CDT-3FC2I2-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC260EXN-SDA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Trademark: ERISSON, Model: 26LEK14.
Briefly from the TV: LCD, 720p HD, 26 "(66 cm) diagonal, HDMI: 2, USB, backlight type: Edge LED.
The composition includes MainBoard MST6M181-T8B and LCD panel (matrix) LC260EXN-SDA1 HD.
ERISSON 26LEK14 TV with LC260EXN-SDA1 LCD display, 26 "(66 cm) diagonal size in 16: 9 format. The required screen brightness of 400 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. Edge LED backlighting is realized in the LED-panel of this TV - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems . Max PAL, SECAM, NTSC Image processing and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats:. MP3, JPEG.
The power of the sound system 16 W (2x8 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB. 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, 1360x768.
Overall dimensions: With a support 652x497x192 mm, Without a support 652x422x48 mm.
Attention! The LC260EXN-SDA1 HD panel of an ERISSON 26LEK14 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.