Technical description and composition of the ERISSON 32LEC2300 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 32LEC2300
Chassis / Version: JUC7.820.00081373
Panel: M320X13-E1-L
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: NCP1251 (PWM SOT23-6)
MOSFET Power: MDF7N65B
MainBoard: JUC7.820.00081373
IC MainBoard: SPI Flash: EN25Q32;
Tuner: R620D
Specifications 32LEC2300
ERISSON 32LEC2300
General repair guidelines for TV LCD LED
ERISSON 32LEC2300, like other televisions, it is advisable to start repairing with inspection of external and internal elements and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the solders of the terminals of transformers or heating elements are detected, 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.
Malfunctions of the power module can be expressed in different ways, for example, the ERISSON 32LEC2300 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. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) 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 the ERISSON 32LEC2300 TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the M320X13-E1-L panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
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 lines and connectors.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes.
Repair of the motherboard JUC7.820.00081373 must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Check or replace SPI Flash elements: EN25Q32; It requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
Attention to users! Self-repair of the ERISSON 32LEC2300 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> ERISSON 32LEC2300 , Main: JUC7.820.00081373, Panel: M320X13-E1-L
The appearance of the MainBoard JUC7.820.00081373 is shown in the figure below:JUC7.820.00081373
JUC7.820.00081373 can be used in TVs:
AKAI LEA-32C25M (Panel M320X13-E1-H), ERISSON 32LEC2300 (Panel M320X13-E1-L), FUSION FLTV-28L32B (Panel M280X13-E1-H).
Main features of the ERISSON 32LEC2300 device:
Installed matrix (LED-panel) M320X13-E1-L.
To power the backlight LEDs, a converter is used, combined with the main board JUC7.820.00081373.
The power module is combined with the MainBoard and is made according to a flyback AC / DC voltage converter using NCP1251 microcircuits (PWM SOT23-6) and power switches of the MDF7N65B type.
MainBoard - the main board (motherboard) is a JUC7.820.00081373 module, using SPI Flash chips: EN25Q32; and others.
The R620D tuner provides TV reception and channel tuning.
Trademark: ERISSON, Model: 32LEC2300.
Shortly from the TV: LCD, 720p HD, 32 "(81 cm) diagonal, TFT TN, there is HDMI, there is USB, backlight type: Edge LED.
The composition uses MainBoard JUC7.820.00081373 and an LCD panel (matrix) M320X13-E1-L. The power supply is combined with the MainBoard.
ERISSON 32LEC2300 TV with an M320X13-E1-L LCD display, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 280 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 3000: 1. Edge LED backlighting is implemented in the LED-panel of this TV - Edge LED. High quality HD images can be viewed 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 is carried out in standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3, JPEG. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, 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, 1360x768.
Overall dimensions: 735x494x220 mm.
Mass of the TV: 6.9 kg.
Attention! The M320X13-E1-L panel of an ERISSON 32LEC2300 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.