Technical description and composition of the ERISSON 42LEN60 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 42LEN60
Chassis / Version: T.MS18VG.81B 12145
Panel: LC420EUN
MainBoard: T.MS18VG.81B 12145
IC MainBoard: CPU: BGA MST6M182VG-LF-Z1; SPI Flash: 25Q32BSIG;
Tuner: CDT-3SP512-36
Specifications 42LEN60
ERISSON 42LEN60
General repair guidelines for TV LCD LED
An external examination of the external and internal elements should be carried out in a timely manner before the start of operations for their dismantling. 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. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Malfunctions of the power module can be expressed in different ways, for example, ERISSON 42LEN60 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.
Power switches in pulsed power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
Sometimes the ERISSON 42LEN60 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the LC420EUN backlight LED converter, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
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.
Repair or diagnostics of the T.MS18VG.81B 12145 motherboard should begin by checking the stabilizers or power converters of its microcircuit. If necessary, you should update the software (software).
Board repair and replacement of CPU chips: BGA MST6M182VG-LF-Z1; SPI Flash: 25Q32BSIG; are made in the presence of the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before changing the tuner CDT-3SP512-36, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner.
Once again, remind users! Attempts to repair the TV ERISSON 42LEN60 on its own without the appropriate qualifications and experience can lead to its complete unrepairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 42LEN60 , Main: T.MS18VG.81B 12145, Panel: LC420EUN
The appearance of MainBoard T.MS18VG.81B is shown in the figure below:T.MS18VG.81B
T.MS18VG.81B can be used in TVs:
AKAI LEA-32V07P (Panel T315XW06 V.0), BBK LEM3283 V1.0 (Panel LC320EXN SDA1), BBK LEM3283F (Panel V315H3-LE4 Rev.C1), ERISSON 42LEN60 (Panel LC420EUN), ERISSON 32LEN60 (Panel LTA320AN01 D02 ), FUSION FLTV-32H20B (Panel LM315TA-T01), SUPRA STV-LC3217W (Panel LC320WXE-SBV1), SUPRA STV-LC3217AWL STV-LC3217W (Panel HV320WX2-201), SUPRA STV-LC3277W (Panel HV320WX2-201), SUPRA STV-LC32170F (Panel HK315TVM-HHC9H).
Main features of the ERISSON 42LEN60 device:
Installed matrix (LED-panel) LC420EUN.
The required supply voltage for all nodes of the TV ERISSON 42LEN60 provides a switching power supply.
MainBoard - the main board (motherboard) is a module T.MS18VG.81B, using CPU chips: BGA MST6M182VG-LF-Z1; SPI Flash: 25Q32BSIG; and others.
The tuner CDT-3SP512-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC420EUN-SEM4
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M (8-bit), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
Trademark: ERISSON, Model: 42LEN60.
Briefly from the TV: LCD, 1080p Full HD, diagonal 42 "(107 cm), HDMI: 2, USB, backlight type: Edge LED.
The composition uses MainBoard T.MS18VG.81B 12145 and an LCD panel (matrix) LC420EUN.
The ERISSON 42LEN60 TV with an LCD display LC420EUN, diagonal size 42 "(107 cm) in 16: 9 format. The required brightness of the screen is 450 cd / m² LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 1400: 1. The LED panel of this TV uses end LED backlighting - Edge LED.The TV’s design and technical features include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution of 1080p (Full HD) standard. frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, JPEG. Stereo audio is implemented in two built-in speakers using NICAM STEREO audio processing system.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, 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, 1280x1024, 1360x768, 1920x1080.
The power consumed by the TV in the operating mode from the network is 140 watts.
Overall dimensions: With stand 373x270x120 mm, Without stand 524x340x44 mm.
Attention! The LC420EUN panel of an ERISSON 42LEN60 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.
