Technical description and composition of the ERISSON 42LES66 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 42LES66
Chassis / Version: 5800-A8M480-0P10
Panel: LC420EUN SEM1
LED driver (backlight): 168P-P42EWB-HCW0
Power Supply (PSU): 168P-P42EWB-HCW0
PWM Power: FSFR1700XSL, OB5223AP, OB6572CP
MainBoard: 5800-A8M480-0P10
IC MainBoard: Flash 25Q32
Tuner: ET-9Z2E-CF106H
Specifications 42LES66
ERISSON 42LES66
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular ERISSON 42LES66, it is advisable to start with a careful external examination of internal and external elements. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
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 chance that the 168P-P42EWB-HCW0 power supply 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. 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.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If ERISSON 42LES66 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the LC420EUN SEM1 panel, or their power converter - LED drivers. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main PSU.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Diagnostics and repair of the motherboard 5800-A8M480-0P10 is carried out by checking the performance of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - Flash 25Q32 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the tuner ET-9Z2E-CF106H, if there is no tuning for the channels, first check the supply voltage at its terminals.
Owners and users of the ERISSON 42LES66 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 42LES66 , Main: 5800-A8M480-0P10, Panel: LC420EUN SEM1
The appearance of the MainBoard 5800-A8M480-0P10 is shown in the figure below:5800-A8M480-0P10
5800-A8M480-0P10 can be used in TVs:
AIWA 47LE61103 (Panel LC470EUN (SE)(F1)), AIWA 42LE6110 (Panel LC420EUN (SE)(M1)), AIWA 39LE6110 (Panel V390HJ1-P01), ERISSON 42LES66 (Panel LC420EUN SEM1), ERISSON 39LES66 (Panel CX275DLEDM), ERISSON 32LES66 (Panel REL320AH-U100 Rev.00), SUPRA STV-LC39660FL (Panel V390HJ1 rev.c1 SEL390V7-S00D ), SUPRA STV-LC32663FL (Panel T320HVN01.2), SUPRA STV-LC39663FL (Panel V390HJ1-P01), SUPRA STV-LC47660FL00 (Panel LC470EUN).
Main features of the ERISSON 42LES66 device:
Installed matrix (LED-panel) LC420EUN SEM1.
The LED driver 168P-P42EWB-HCW0 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the TV ERISSON 42LES66 are generated by the power supply module 168P-P42EWB-HCW0, or its analogs using the FSFR1700XSL, OB5223AP, OB6572CP microcircuits.
MainBoard - the main board (motherboard) is a 5800-A8M480-0P10 module, using Flash 25Q32 chips and others.
The ET-9Z2E-CF106H tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420EUN-SEM1
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: 280 cd / m²
Contrast Ratio: 1000: 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: 42LES66.
Briefly from the TV: LCD, 1080p Full HD, diagonal 42 "(107 cm), HDMI: 3, USB: 2, backlight type: Edge LED.
The composition uses the MainBoard 5800-A8M480-0P10 and the LCD panel (matrix) LC420EUN SEM1.
Power Supply Unit (PSU) 168P-P42EWB-HCW0 Power Supply.
An ERISSON 42LES66 TV with an LC420EUN 42 ”(107 cm) diagonal LCD display in 16: 9 format. The required screen brightness of 450 cd / m² is provided by LED backlighting. 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 analog 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, MPEG4, DivX, JPEG .
The power of the acoustic system of sound 20 W (2x10 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 x3, USB x2. 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, 1360x768.
The power consumed by the TV in the operating mode from the network is 120 watts.
Overall dimensions: With stand 971x633x220 mm, Without stand 971x580x92 mm.
Mass of the TV: 16.3 kg.
Attention! The LC420EUN SEM1 panel of an ERISSON 42LES66 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.
