Technical description and composition of the ERISSON 55LEC2000 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 55LEC2000
Chassis / Version: LS1B
Panel: M550F13-E1-A 1080p Full HD
LED backlight: LB-M550F13-E1-A-G1-LD2
T-CON: T550HVN01.8 55T02-C08
Power Supply (PSU): R-HS155D-1MF21
MainBoard: JUC7.820.00084054 LS1B
IC MainBoard: 25Q64, H5TQ1G630FR, RT9108NB, MSB101A
Tuner: DMI21-C2I3RH
Control: Service Mode: SOURCE3138
Technical Specifications 55LEC2000
ERISSON 55LEC2000
General repair guidelines for TV LCD LED
ERISSON 55LEC2000, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered 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.
In the absence of any signs of operability, when the ERISSON 55LEC2000 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
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 55LEC2000 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 M550F13-E1-A 1080p Full HD panel 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).
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 rulers and connectors.
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 of the motherboard JUC7.820.000884054 LS1B 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.
When repairing an MB board, you need to check its components Spi Flash: 25Q64. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
In cases where there is no tuning to local television channels, make sure that there are supply voltages at the terminals of the DMI21-C2I3RH tuner.
Remember! Attempts to self-repair by users of the ERISSON 55LEC2000 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> ERISSON 55LEC2000 LS1B, Main: JUC7.820.000884054 LS1B, Panel: M550F13-E1-A 1080p Full HD
The appearance of the MainBoard LS1B is shown in the figure below:LS1B
JUC7.820.00084054 can be used in TVs:
BBK 40LEM-3080/FT2C (Panel ECG390AH-LD2 (SN)), BBK 32LEM-3081/T2C (Panel M320X13-E2-H), BBK 32LEM-1003/T2C (Panel M320X13-E4-L HD), DEXP 28A3000 (Panel R-HS055D-1MF), DEXP 50A7000 (Panel C500F13-E3-A), DNS C28DC2000 (Panel M280X13-E1-H), DNS C39DC2000 (Panel M390F13-E1-A), ERISSON 42LEC2000 (Panel M420F13-E1-L (G1)), ERISSON 55LEC2000 (Panel M550F13-E1-A 1080p Full HD), ERISSON 28LEC2000 (Panel M280X13-E1-H), RUBIN RB-32SD8T2C (Panel M320X13-E3-H), TELEFUNKEN TF-LED32S12T2 (Panel M320X12-E9-A(1)).
Main features of the ERISSON 55LEC2000 device:
Installed matrix (LED-panel) M550F13-E1-A 1080p Full HD.
The matrix control uses the Timing Controller (T-CON) T550HVN01.8.
The formation of the necessary supply voltages for all nodes of the ERISSON 55LEC2000 TV is carried out by the power module R-HS155D-1MF21, or its analogues.
MainBoard - the main board (motherboard) is a JUC7.820.00084054 module, using 25Q64, H5TQ1G630FR, RT9108NB, MSB101A and other chips.
The DMI21-C2I3RH tuner provides television reception and channel tuning.
Trademark: ERISSON, Model: 55LEC2000.
Shortly from the TV: LCD, 1080p Full HD, diagonal 55 "(140 cm), TFT TN, HDMI: 2, USB: 2, backlight type: Edge LED.
The composition uses the MainBoard JUC7.820.00084054 LS1B and the LCD panel (matrix) M550F13-E1-A 1080p Full HD.
Power Supply Unit (PSU) R-HS155D-1MF21 Power Supply.
TV ERISSON 55LEC2000 with LCD M550F13-E1-A, diagonal size 55 "(140 cm) 16: 9 format. The LED-panel of this TV is equipped with LED backlighting - Edge LED. The design and technical capabilities of the TV include viewing programs and movies in high quality HD at a resolution of 1920x1080 pixels in graphic decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 57 6i, 576p, 720p, 1080i. Supported media file formats: MP3, WMA, 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), 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 a support 897x597x230 mm, Without a support 732x438x58 mm.
Attention! The M550F13-E1-A 1080p Full HD panel of the ERISSON 55LEC2000 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.