Technical description and composition of the BBK LD3224SU TV, type of panel and applicable modules. The composition of the modules.BBK
Model: LD3224SU + DVD
Chassis / Version: 090-6E1610-04
Panel: TM315GW01 V.0
Inverter (backlight): VIT61801.00
PWM Inverter: OZ964AGN
MOSFET Inverter: P4004ED, P3004BD
Power Supply (PSU): MLT668TL
PWM Power: L6562D (PFC), LD7535, SG3525 (MC063PG)
MOSFET Power: 13N50C, 5N50CF
MainBoard: 090-6E1610-04
IC MainBoard: CPU: MST6M16, SPI Flash: EN25P (F) 16, EEPROM: FM24C64A, SDRAM: H5DU1262GTR-FBC; HEF4052BT, CT3257A, TDA7266SA
Tuner: AFT7 / W110G
Control: RC1524; DVD: BKB138-11764 32825
Technical Specifications LD3224SU
BBK LD3224SU
General recommendations for repairing TV LCD
Possible malfunctions
- The BBK LD3224SU TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
Usually, with such manifestations, the defect is caused by faulty elements in the main power module of the MLT668TL. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of power switches (13N50C, 5N50CF) of converters and rectifier diodes for the presence of a possible short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) L6562D (PFC), LD7535, SG3525 (MC063PG), if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, inverter protection must be disabled. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 090-6E1610-04 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: MST6M16, SPI Flash: EN25P (F) 16, EEPROM: FM24C64A, SDRAM: H5DU1262GTR-FBC; HEF4052BT, CT3257A, TDA7266SA requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If you suspect a malfunction of the AFT7 / W110G tuner, first of all, it is necessary to verify the correctness of the software, as well as the presence of the required voltage levels and the data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
It should be remembered! Attempts to independently repair the BBK LD3224SU TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
SCHEMATIC / MANUAL -------------> MLT668TL Power supply
The appearance of MainBoard 090-6E1610-04 is shown in the figure below:090-6E1610-04
090-6E1610-04 can be used in TVs:
BBK LD3224SU + DVD (Panel TM315GW01 V.0), MYSTERY MTV-3205W (Panel TM315GW01 V.0).
The appearance of the power supply
Main features of the BBK LD3224SU device:
Installed matrix (LCD-panel) TM315GW01 V.0.
The VIT61801.00 inverter is used to power the backlight, controlled by the OZ964AGN PWM controller. As power elements of the inverter, keys of the type P4004ED, P3004BD are used.
The necessary supply voltages for all nodes of the BBK TV LD3224SU are generated by the MLT668TL power supply module or its analogs using L6562D (PFC), LD7535, SG3525 (MC063PG) microcircuits and 13N50C, 5N50CF type power switches.
MainBoard - the main board (motherboard) is a 090-6E1610-04 module using CPU chips: MST6M16, SPI Flash: EN25P (F) 16, EEPROM: FM24C64A, SDRAM: H5DU1262GTR-FBC; HEF4052BT, CT3257A, TDA7266SA and others.
The AFT7 / W110G tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: TM315GW01 V.0
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Transmissivity: 4.62% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
LCD TV BBK LD3224SU with LCD TM315GW01, diagonal size 32 "(81 cm) 16: 9 format. The brightness of the screen 500 cd / m² is ensured by fluorescent lights CCFL (EEFL). Dynamic contrast ratio 1500: 1 is achieved by special control of work It is possible to 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 systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, VideoCD, SVCD, Picture CD, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, component, SCART, RGB, VGA, HDMI x2, USB x2. 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.
The power consumed by the TV in the operating mode from the network is 140 watts.
Overall dimensions: With stand 794x571x232 mm, Without stand 790x515x90 mm.
TV Weight: 13 kg.
Attention! The BB3 LD3224SU LCD TV panel TM315GW01 V.0 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
The power of the sound speaker system 16 W (2x8 W) is provided by two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, S-Video, component, SCART, RGB, VGA, HDMI x2, USB x2. 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.
The power consumed by the TV in the operating mode from the network is 140 watts.
Overall dimensions: With stand 794x571x232 mm, Without stand 790x515x90 mm.
TV Weight: 13 kg.
Attention! The BB3 LD3224SU LCD TV panel TM315GW01 V.0 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!