Technical description and composition of the BBK 32LEM-1003 TV, type of panel and applicable modules. The composition of the modules.BBK LED
Model: 32LEM-1003 / T2C
Chassis / Version: LS1B
Panel: LC320EXN
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: JUC7.820.00098892 LS1B 2013.11.04
IC MainBoard: Spi Flash: 25Q64BSIG, Ram: SK Hunix H5TQ1G63EFR, Audio: TPA31100D2
Tuner: DT21WN-2A-E
BBK LED
Model: 32LEM-1003 / T2C
Chassis / Version: JUC7.820.00084054 LS1B
Panel: M320X13-E4-L HD
MainBoard: JUC7.820.00084054 LS1B
IC MainBoard: Spi Flash: 25Q64
Tuner: DMI21-C2I3RH
Specifications 32LEM-1003 / T2C
BBK 32LEM-1003
General repair guidelines for TV LCD LED
TV BBK 32LEM-1003 / T2C, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
In the absence of any signs of operability, when the BBK 32LEM-1003 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.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller chip are subject to verification, which it is desirable to verify by replacement.
If there is no image when you turn on the BBK 32LEM-1003, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the M320X13-E4-L HD panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required.
In cases of attempts to repair the motherboard JUC7.820.00084054 LS1B, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - Spi Flash: 25Q64. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If you suspect a malfunction of the tuner DMI21-C2I3RH, first of all, you must make sure that there is a supply voltage on the corresponding output of the tuner.
Remember! Attempts to self-repair by users of the BBK 32LEM-1003 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> BBK 32LEM-1003/T2C LS1B, Main: JUC7.820.00084054 LS1B, Panel: M320X13-E4-L HD
Schematic Diagrams 24 pages of 2013 on -----------> 19LEM-3082/T2C, 22LEM-3082/FT2C, 24LEM-1004/T2C, 28LEM-1003/T2C, 32LEM-1003/T2C, 32LEM-3081/T2C
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 BBK 32LEM-1003 device:
Installed matrix (LED-panel) M320X13-E4-L HD.
The necessary supply voltage for all nodes of the TV BBK 32LEM-1003 provides a switching power supply.
MainBoard - the main board (motherboard) is a JUC7.820.00084054 module, using Spi Flash chips: 25Q64 and others.
The DMI21-C2I3RH tuner provides television reception and channel tuning.
BBK 32LEM-1003 / T2C LED TV with M320X13-E4-L LCD, 32 "(81 cm) diagonal of 16: 9 format. The required brightness of the screen is 250 cd / m² thanks to LED backlighting. The ratio of maximum brightness to the minimum (contrast) is 1200: 1. This model uses side illumination from Edge LEDs. You can view images in high quality HD 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 PAL, SECAM, NTSC systems. Digital signal processing and generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system 10 W (2x5 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, VGA, HDMI x3, USB. 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, 1360x768. The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C MPEG4, DVB-T2 standards.
Overall dimensions: With stand 738x495x220 mm, Without stand 738x444x77 mm.
TV Weight: 6.3 kg.
Attention! The BBK 32LEM-1003 / T2C LED TV panel M320X13-E4-L 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.
