Technical description and composition of the BBK LT2210S TV, panel type and applicable modules. The composition of the modules.BBK
Model: LT2210S
Panel: CLAA320WF01 // CLAA220WA01
Inverter (backlight): 6LY01214B0
Power Supply (PSU): 6HU0042010
MainBoard: 6HU0050110
IC MainBoard: TDA4470 (5274470001). MST9E19B (5270919002), TDA7266SA (5267266001)
Control: 6010Y03512 RC-Y35-0K
Technical specifications LT2210S
BBK LT2210S
General recommendations for repairing TV LCD
Possible manifestations of defects
- BBK LT2210S does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Most likely in this case, the main switching power supply (IIPS) 6HU0042010 is faulty. It is necessary to verify the presence of secondary voltages and, if they are absent, check the power switches 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 power 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, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as by distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should 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, 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 turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 6HU0050110 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). Sometimes they require checking or replacing (if necessary) the elements of the MainBoard board - TDA4470 (5274470001). MST9E19B (5270919002), TDA7266SA (5267266001). In cases where the BGA processor is used, its malfunction is usually detected by local heating.
Attention! Users and owners of LT2210S TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Main features of the BBK LT2210S device:
Installed matrix (LCD-panel) CLAA320WF01 or CLAA220WA01.
To power the backlight used inverter 6LY01214B0.
The formation of the necessary supply voltage for all nodes of the BBK LT2210S TV is carried out by the power module 6HU0042010, or its analogues.
MainBoard - the main board (motherboard) is a 6HU0050110 module, using TDA4470 chips (5274470001). MST9E19B (5270919002), TDA7266SA (5267266001) and others.
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
Brand: BBK, Model: LT2210S.
Shortly from the TV: LCD, 720p HD, diagonal 22 "(55 cm), there is HDMI.
The composition uses MainBoard 6HU0050110 and an LCD panel (matrix) CLAA320WF01, or CLAA220WA01.
Power Supply Unit (PSU) 6HU0042010 Power Supply.
BBK LT2210S LCD TV with CLAA320WF01 LCD, 22 "(55 cm) diagonal 16:10 aspect ratio. 300 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 1680x1050 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 standard mouths 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, component, SCART, RGB, VGA, HDMI. 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.
The power consumed by the TV in the operating mode from the network is 140 watts.
Overall dimensions: With stand 468x399x178 mm, Without stand 439x296x73 mm.
Attention! The CLAA320WF01 of the BBK LT2210S 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!