Technical description and composition of the TV AIWA 42LE61203, panel type and applicable modules. The composition of the modules.AIWA LED
Model: 42LE61203
Chassis / Version: V1N09
Panel: LC420DUJ (SG) (K1)
T-CON: 6870C-0469A
LED driver (backlight): integrated into PSU
Power Supply (PSU): 168P-L3L026-W0 5800-L3L026-W000
MainBoard: 5800-A6M88G-0P00 Ver00.00
IC MainBoard: NAND Flash: TC58NVG1S3HTA00, EEPROM: K24C64
Specifications 42LE61203
AIWA 42LE61203
General repair guidelines for TV LCD LED
Possible malfunctions
- AIWA 42LE61203 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the 5800-L3L026-W000 power supply is usually faulty. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 5800-A6M88G-0P00 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components NAND Flash: TC58NVG1S3HTA00, EEPROM: K24C64. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
Attention to users! Self-repair of the TV AIWA 42LE61203 without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Repair MainBoard
The appearance of the MainBoard 5800-A6M88G-0P00 is shown in the figure below:
5800-A6M88G-0P00
5800-A6M88G-0P00 can be used in TVs:
AIWA 32LE6020 (Panel SEL320HY (CD0-701)(05)), AIWA 40LE6120 (Panel SEL400FY(QD0-701)(05)), ERISSON 40LES68 (Panel 1080p Full HD 1920x1080), TELEFUNKEN LED40S13T2 (Panel SEL400FY (QD0-701)(02)).
The appearance of the power supply
Key Features of AIWA 42LE61203:
Installed matrix (LED-panel) LC420DUJ (SG) (K1).
The matrix control uses the Timing Controller (T-CON) 6870C-0469A.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the TV AIWA 42LE61203 are formed by the power supply module 168P-L3L026-W0, or its analogs.
MainBoard - the main board (motherboard) is a 5800-A6M88G-0P00 module, using NAND Flash chips: TC58NVG1S3HTA00, EEPROM: K24C64 and others.
Additional technical information about the panel:
Brand: LG Display
Model: LC420DUJ-SGK1
Type: a-Si TFT-LCD, CELL
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 927.936x521.964 mm
Surface: Antiglare (Haze 1%), Hard coating (2H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.25% (with Polarizer)
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: TBD
Frequency: 60Hz
Signal Interface : LVDS (2 ch, 8-bit), 51 pins
Voltage : 12.0V
Trademark: AIWA, Model: 42LE61203.
Short from TV: LCD, LED backlight, 42 ", 1920x1080, 1080p Full HD, 3D, sound: 12W, HDMI: 3, Internet access, Wi-Fi, Smart TV.
The composition includes MainBoard 5800-A6M88G-0P10 Ver00.00 and LCD Panel LC420DUJ-SGK1 (REL420FY). Backlight: Direct LED.
Power Supply Unit (PSU) 5800-L3L026-W000 168P-L3L026-W0 Power Supply.
AIWA 42LE61203 TV with LC420DUJ-SGK1 LCD, 42 "(107 cm) diagonal size in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special control of the LEDs. V manufacturing technology of the display of this model implemented LED backlight.
There is support for 3D images with active (shutter) technology for separating the right and left channels.
The LC420DUJ-SGK1 (REL420FY) panel and the 5800-A6M88G-0P10 motherboard software provide for watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD).
42LE61203 is equipped with SMART software and the ability to work on the Internet. Connecting to a network can be done via Wi-Fi. The input high-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, WMA, MPEG4, MKV, JPEG.
The power of the sound system 12 W (2x6 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), HDMI x3, MHL, USB x2, Ethernet (RJ-45), Wi-Fi. 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, 1920x1080. A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: 1057x682x147 mm.
The mass of the TV: 15.7 kg.
Attention! The LC420DUJ-SGK1 (REL420FY) panel of the AIWA 42LE61203 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.