Technical description and composition of the ERISSON 19LEN60 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 19LEN60
Chassis / Version: T.MT8223.5B
Panel: LC185EXN
MainBoard: T.MT8223.5B 10424
IC MainBoard: SPI Flash: MX25L1606E;
Tuner: F20WT-3DDR-E
Specifications 19LEN60
ERISSON 19LEN60
General repair guidelines for TV LCD LED
Repair of the ERISSON 19LEN60 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. 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.
If the ERISSON 19LEN60 does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
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 19LEN60, 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 LC185EXN 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 rulers and connectors.
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.
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 cases of attempts to repair the MB board (SSB), you must check the health of its elements - SPI Flash: MX25L1606E; which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
The malfunction of the F20WT-3DDR-E tuner is established after checking the software and all the supply voltages at its terminals.
Attention to users! Self-repair of an ERISSON 19LEN60 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 19LEN60, Main: T.MT8223.5B 10424, Panel: LC185EXN
The appearance of MainBoard T.MT8223.5B is shown in the figure below:T.MT8223.5B
Main features of the ERISSON 19LEN60 device:
Installed matrix (LED-panel) LC185EXN.
The required supply voltage for all nodes of the TV ERISSON 19LEN60 provides a switching power supply.
MainBoard - the main board (motherboard) is a T.MT8223.5B module using SPI Flash chips: MX25L1606E; and others.
The F20WT-3DDR-E tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC185EXN-SCA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Dithering), CIE1931 68%
Response Time: 9 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
ERISSON 19LEN60 TV with an LC185EXN LCD display, 19 "(48 cm) diagonal size in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlight LED. The LED panel of this TV is equipped with LED backlight - Edge LED It is possible to 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 PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in tandartah 480i, 480p, 576i, 576p, 720p, 1080i.
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), audio x2, component, SCART, VGA, HDMI, 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.
Overall dimensions: With stand 769x536x196 mm, Without stand 580x370x44 mm.
Attention! The panel of the LC185EXN ERISSON 19LEN60 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.