Technical description and composition of the BBK 43LEM-1015 TV, panel type and applicable modules. The composition of the modules.BBK LED
Model: 43LEM-1015 / FT2C
Chassis / Version: JUC7.820.00125910
Panel: C430F15-E3-A (G3)
LED backlight: LB43006
LED driver (backlight): integrated into PSU; 400 mA
PWM LED driver: MPS1518 (MP4012)
MOSFET LED driver: ME08N20-0
Power Supply (PSU): R-HS105D-1MF11 -3 XR7.820.497V1.5
MainBoard: JUC7.820.00125910
IC MainBoard: 25Q64, TPS54428 IAGMF, RT9108NB
Tuner: CH DMI21-C8I6RH
Specifications 43LEM-1015 / FT2C
BBK 43LEM-1015
General repair guidelines for TV LCD LED
Possible malfunctions
- The BBK 43LEM-1015 TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
In some of these cases, a malfunction is detected in the R-HS105D-1MF11 power supply module. It is then necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converters for a short-circuit probability.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The faulty usually in these cases is the backlight matrix (LED-panel). More often the reason for this is the breakdown of the LEDs, or poor contact in the connectors of the strips, less often the LED driver may be malfunctioning.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the JUC7.820.00125910 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). In cases of attempts to repair the MB board (SSB), it is necessary to check the serviceability of its elements - 25Q64, TPS54428 IAGMF, RT9108NB which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If you suspect a malfunction of the CH DMI21-C8I6RH tuner, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Attention! For users and owners of 43LEM-1015 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
FIRMWARE FOR SPI FLASH -----------> BBK 43LEM-1015/FT2C, Main: JUC7.820.00125910, Panel: C430F15-E3-A (G3)
The appearance of the MainBoard JUC7.820.00125910 is shown in the figure below:JUC7.820.00125910
JUC7.820.00125910 can be used in TVs:
DEXP F55B7200C (Panel C550F14-E6-L), DEXP F43B7200C (Panel C430F14-E1-L).
The appearance of the power supply
Main features of the BBK 43LEM-1015 device:
Installed matrix (LED-panel) C430F15-E3-A (G3).
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the MPS1518 PWM controller (MP4012). As the power elements of the LED driver, keys of the type ME08N20-0 are used.
The necessary supply voltages for all nodes of the TV BBK 43LEM-1015 are generated by the power module R-HS105D-1MF11, or its analogs.
MainBoard - the main board (motherboard) is a JUC7.820.00125910 module, using 25Q64 chips, TPS54428 IAGMF, RT9108NB and others.
The CH DMI21-C8I6RH tuner provides TV reception and channel tuning.
Brand: BBK, Model: 43LEM-1015 / FT2C.
Briefly from the TV: LCD, 1080p Full HD, diagonal 43 "(109 cm), HDMI: 3, USB, DVB-T2 support, backlight type: Edge LED.
The composition uses MainBoard JUC7.820.00125910 and LCD-panel C430F15-E3-A (G3).
Power Supply Unit (PSU) R-HS105D-1MF11 -3 XR7.820.497V1.5 Power Supply.
BBK 43LEM-1015 / FT2C LED TV with C430F15-E3-A LCD display, diagonal size 43 "(109 cm) in 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 3000: 1. This model uses side illumination from Edge LEDs.The design and technical capabilities of the TV include 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). high frequency or video The signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs 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 6 W (2x3 W) provide 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, component, VGA, HDMI x3, USB, optical. 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. The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C MPEG4, DVB-T2 standards.
Overall dimensions: With stand 965x619x209 mm, Without stand 965x562x77 mm.
TV Weight: 8.5 kg.
Attention! The C430F15-E3-A (G3) panel of the BBK 43LEM-1015 / FT2C 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.
