Technical description and composition of the BBK LT3210S TV, panel type and applicable modules. The composition of the modules.BBK
Model: LT3210S
Panel: CLAA320WF01
T-CON: CPT 320WF01C; VTII8874.FL6269.1C
Inverter (backlight): 320WF01
Power Supply (PSU): 32HU36S
MainBoard: 569HU5601C
IC MainBoard: F40 100GCP, TDA4470, RS-232, MAX3232C
Tuner: TDQ-6F / W124XC
Control: RC-2603
Technical Specifications LT3210S
BBK LT3210S
General recommendations for repairing TV LCD
Possible malfunctions
- BBK LT3210S TV does not turn on at all. The control lights do not light or flash. On the remote control and the buttons on the control panel does not respond.
In such cases, the fault should be sought first in the 32HU36S power supply module. It is necessary to measure its secondary output voltages, 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.
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. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch may be PWM (PWM). It is checked only by replacement with a known good one.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and 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.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements F40 100GCP, TDA4470, RS-232, MAX3232C. BGA chip malfunctions are usually easy to detect by warming up.
Before replacing the TDQ-6F / W124XC tuner, if there is no channel tuning, 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
Once again, remind users! Attempts to self-repair a BBK LT3210S TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard 569HU5601C is shown in the figure below:
569HU5601C
569HU5601C can be used in TVs:
BBK LT3210S (Panel CLAA320WF01), BBK LT2610S (Panel V2601B1-L02).
Main features of the BBK LT3210S device:
Installed matrix (LCD-panel) CLAA320WF01.
The matrix control uses the Timing Controller (T-CON) CPT.
A 320WF01 inverter is used to power the backlight.
The formation of the necessary supply voltages for all nodes of the BBK LT3210S TV is carried out by the 32HU36S power module, or its analogues.
MainBoard - the main board (motherboard) is a 569HU5601C module, using F40 100GCP, TDA4470, RS-232, MAX3232C and other chips.
The TDQ-6F / W124XC tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CPT
Model: CLAA320WF01U
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit), CIE1931 75%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 7 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
BBK LT3210S LCD TV with CLAA320WF01 LCD, 32 "(81 cm) diagonal size 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 1200: 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 generation of a digital signal occurs in standard max 480i, 480p, 576i, 576p, 720p, 1080i. Stereo sound is realized by two built-in speakers. Use audio NICAM STEREO processing system.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI 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 250 watts.
Overall dimensions: 800x599x242 mm.
The mass of the TV: 23 kg.
Attention! The CLAA320WF01 LCD panel of the BBK LT3210S LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!