Technical description and composition of the ERISSON 19LEK14 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 19LEK14
Chassis / Version: MST6M182VG-T7S
Panel: M185BGE-L22 Rev. C1
MainBoard: MST6M182VG-T7S
IC MainBoard: IT6633E-P, SPI Flash: 25Q32
Tuner: KTDANW-14-09
Specifications 19LEK14
ERISSON 19LEK14
General repair guidelines for TV LCD LED
Any repair usually begins with an external inspection. Visible damage to the elements can sometimes indicate the direction of the search for the defect even before the necessary measurements. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the solders of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
Sometimes the ERISSON 19LEK14 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. If it is working properly, you must check the standby batteries on the Main Board. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If there is no image when you turn on ERISSON 19LEK14, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the M185BGE-L22 Rev.C1 panel, or in their power converter.
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for an open circuit, as well as the reliability of the connections in the connectors and rations of the terminals.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
Diagnostics and repair of the MST6M182VG-T7S motherboard usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SPI Flash: 25Q32; and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Before replacing the F50CT-2DD-E (X) tuner, if there is no channel tuning, you must first check the software and the supply voltage at its terminals.
Attention to users! Self-repair of the ERISSON 19LEK14 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 19LEK14 , Main: MST6M182VG-T7S, Panel: M185BGE-L22 Rev.C1
The appearance of the MainBoard MST6M182VG-T7S is shown in the figure below:MST6M182VG-T7S can be used in TVs:
DAEWOO DSL-24L31E (Panel K236WL), ERISSON 23LEK14 (Panel 1080p Full HD 1920x1080), ERISSON 19LEK14 (Panel M185BGE-L22 Rev.C1), HYUNDAI H-LED22V5 (Panel LM215WF4), HYUNDAI H-LED24V11 (Panel LM230WF5 (TL)(D1) ), ROLSEN RL-17L1002U (Panel LTN173KT02 ), RUBIN RB-19SL1U WH (Panel 19 ").
Main features of the ERISSON 19LEK14 device:
Installed matrix (LED-panel) M185BGE-L22 Rev. C1.
The required supply voltage for all nodes of the TV ERISSON 19LEK14 provides a switching power supply.
MainBoard - the main board (motherboard) is an MST6M182VG-T7S module, using IT6633E-P, SPI Flash chips: 25Q32 and others.
The KTDANW-14-09 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: M185BGE-L22
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 8S4P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
ERISSON 19LEK14 TV with a M185BGE-L22 LCD display, 19 "(48 cm) diagonal size in 16: 9 format. The required screen brightness of 250 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 an analog system . Ah 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, MPEG4, DivX, JPEG.
The power of the acoustic system of sound 6 W (2x3 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 x2, audio x4, S-Video, component, VGA, HDMI x3, USB. 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, 1360x768.
Overall dimensions: With stand 468x365x155 mm, Without stand 468x315x37 mm.
Attention! The M185BGE-L22 Rev. C1 panel of the ERISSON 19LEK14 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.