Technical description and composition of the BBK LD2213SU TV, type of panel and applicable modules. The composition of the modules.BBK
Model: LD2213SU Ver1
Chassis / Version: J2233M1.M
Panel: M216H1-L01 RevC1, LTA216AT01
Inverter (backlight): LK-IN220417A Rev1.5 CQC03001006425
Power Supply (PSU): LK-OP106001-013 Rev1.1 E248439
MainBoard: L2M25 (03) // L2M18 (03)
IC MainBoard: SA7454, MP1484EN (8), DVD 00K102, AM5888S
Tuner: UVL7705VEAW1
Control: LT121K
BBK
Model: LD2213SU Ver2
Chassis / Version: v.J2233M1L.C
Panel: LCD LC220WXE-TBA1 // M216H1-L01
Inverter (backlight): LK-IN220417A
PWM Inverter: OB3302CP
MOSFET Inverter: AO4946
Trans Inverter: LKT-035 CAY T-6344 1020
Power Supply (PSU): LK-OP106001-013
MainBoard: MAIN_PCB L2M18 (03)
IC MainBoard: SA7454
Tuner: DWE7053BW
Control: RC-B3-10, RC-2214-D
Technical Specifications LD2213SU
BBK LD2213SU
General recommendations for repairing TV LCD
Possible malfunctions
- The BBK LD2213SU TV does not turn on and does not show any signs of operability at all. There is no reaction to either the remote control or the front panel control buttons.
In the vast majority of such cases, a malfunction is detected in the LK-OP106001-013 power supply module. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a 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.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is 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 the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. 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 MAIN_PCB 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - SA7454 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Before replacing the tuner DWE7053BW, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
We recommend the owners of the LD2213SU TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
Service Manual with Schematic Diagram 21 pages 2007 model LD1913SU, LD2213SU.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> BBK LD1913SU, LD2213SU L2M18
SCHEMATIC DIAGRAM / PSU ------------------> LK-IN220417A
The appearance of MainBoard 21901-2 is shown in the figure below:21901-2
21901-2 can be used in TVs:
BBK LD1516K (Panel SVA156WX1-01TB), BBK LD1906SI (Panel SVA190WX02TB), BBK LD2006K (Panel V201V1-T03 Rev.C4).
Main features of the BBK LD2213SU device:
Installed matrix (LCD panel) LCD LC220WXE-TBA1 or M216H1-L01.
To power the backlight, an inverter LK-IN220417A is used, it is controlled by the PWM controller OB3302CP. A transformer LKT-035 CAY T-6344 1020 is installed in the inverter converter. AO4946 switches are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the BBK LD2213SU TV is carried out by the power module LK-OP106001-013, or its analogues.
MainBoard - the main board (motherboard) is a MAIN_PCB module, using SA7454 chips and others.
The DWE7053BW tuner provides TV reception and channel tuning.
BBK LD2213SU LCD TV with 22 "(55 cm) LCD LCD, 16: 9 format. 400 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 1000: 1. 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 occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: WMA, MPEG4, VideoCD, SVCD, Picture CD, 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, SCART, RGB, VGA, HDMI, 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.
The power consumed by the TV in the operating mode from the network is 60 watts.
Overall dimensions: 530x399x170 mm.
TV Weight: 5.1 kg.
Attention! The BBK LD2213SU LCD TV LCD panel LC220WXE-TBA1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!