Technical description and composition of the ERISSON 32LEC2000 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 32LEC2000
Chassis / Version: JUC7.820.00117550 HLT57EJ
Panel: C320X14-E3-B // M320X13-E1-H
LED backlight: SVJ320AJ9_Rev00_6LED_140707
LED driver (backlight): integrated into MainBoard
PWM LED driver: MP4012
MOSFET LED driver: MDD14N25
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: JUC7.820.00117550 // JUG7.820.00084054
IC MainBoard: CPU: 9206B, SPI Flash: GD25Q64, MP1471AGJ, TPS54428, RT9108NB
Tuner: CH DMI21-C816RH
Specifications 32LEC2000
ERISSON 32LEC2000
General repair guidelines for TV LCD LED
The ERISSON 32LEC2000 TV, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
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 probability that the power 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. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
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).
Sometimes the ERISSON 32LEC2000 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 converter for the backlight LEDs of the M320X13-E1-H panel, 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, the panel must be disassembled.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
The JUG7.820.00084054 motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SPI FLASH: 25Q64. BGA chip malfunctions are usually easy to detect by warming up.
The malfunction of the tuner DT21WN-2A-E is established after checking the software and all the supply voltages at its terminals.
Attention to the owners! Attempts to self-repair the ERISSON 32LEC2000 TV are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> ERISSON 32LEC2000, Main: JUG7.820.00084054, Panel: M320X13-E1-H
FIRMWARE FOR SPI FLASH -----------> ERISSON 32LEC2000, Main: JUC7.820.00117550, Panel: C320X14-E3-B
The appearance of the MainBoard JUC7.820.00117550 is shown in the figure below:JUC7.820.00117550
JUC7.820.00117550 can be used in TVs:
BBK 32LEM-1018/T2C (Panel C320X14-E12-H), DEXP H32B7200C (Panel C320X14-E12-H(G3)), DEXP H32B7400C (Panel C320X14-E3-H (G7)), ERISSON 32LEC2500 (Panel M320X13-E2-B), TELEFUNKEN LED32S22T2 (Panel M320X13-E1-A).
Main features of the ERISSON 32LEC2000 device:
Installed matrix (LED-panel) C320X14-E3-B or M320X13-E1-H.
To power the backlight LEDs, a converter is used, combined with the main board JUC7.820.00117550, controlled by the MP4012 PWM controller. As power elements of the LED driver, keys of the MDD14N25 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a JUC7.820.00117550 module, using CPU chips: 9206B, SPI Flash: GD25Q64, MP1471AGJ, TPS54428, RT9108NB and others.
The CH DMI21-C816RH tuner provides TV reception and channel tuning.
Trademark: ERISSON, Model: 32LEC2000.
Shortly from the TV: LCD, 720p HD, 32 "(81 cm) diagonal, HDMI: 2, USB: 2, backlight type: Edge LED.
The composition uses MainBoard JUC7.820.00117550, or JUG7.820.00084054 and LCD-panel C320X14-E3-B, or M320X13-E1-H. The power supply is combined with the MainBoard.
ERISSON 32LEC2000 TV with C320X14-E3-B LCD, 32 "(81 cm) diagonal size of 16: 9 format. The required brightness of the screen is 280 cd / m² 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, WMA, JPEG. Stereo sound is realized by two built-in speakers. NICAM audio processing system is used. STEREO.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), component, VGA, HDMI x2, USB x2. 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 735x494x219 mm, Without stand 735x441x88 mm.
Mass of the TV: 6.9 kg.
Attention! The C320X14-E3-B panel of an ERISSON 32LEC2000 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.