Technical description and composition of the BBK LT3209S TV, panel type and applicable modules. The composition of the modules.BBK
Model: LT3209S
Chassis / Version: IPON 150
Panel: V320B1-L04 Rev. C1
T-CON: V315B1-C01; CM2681A-KQ, EM636165TS-7G, AT1380AP, AS-15G
Inverter (backlight): integrated into PSU
PWM Inverter: SG3525A, D78F9222CX
MOSFET Inverter: FDS6679AZ, STM4410A
Trans Inverter: TLT1492 7Z01
Power Supply (PSU): 200-P00-HM150H
PWM Power: L6562D (PFC), OB2262 (PWM SOT23-6)
MOSFET Power: 18N50; 7N65C; 9N50CF - 2pcs
MainBoard: 200-107-JK371XP-CH REV: C
IC MainBoard: MT8293AE HY5DU281622FTP-5 GS3257S1G TDA8932
Tuner: M09WPP-2P-E
Technical Specifications LT3209S
BBK LT3209S
General recommendations for repairing TV LCD
Possible malfunctions
- The BBK LT3209S 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 the vast majority of such cases, a malfunction is detected in the 200-P00-HM150H power supply module. It is necessary to verify the presence of secondary voltages and, if they are absent, check the power switches (18N50; 7N65C; 9N50CF - 2 pcs) 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. PWM chip L6562D (PFC), OB2262 (PWM SOT23-6) 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 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 200-107-JK371XP-CH 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 MT8293AE HY5DU281622FTP-5 GS3257S1G TDA8932. BGA chip malfunctions are usually easy to detect by warming up.
If the TV works normally from external devices, but does not tune into television channels, the tuner M09WPP-2P-E may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention TV owners! Attempts at self-repair of BBK LT3209S are not recommended by the manufacturer and can lead to serious negative consequences!
The appearance of the MainBoard 200-107-JK371XP-CH is shown in the figure below:200-107-JK371XP-CH
200-107-JK371XP-CH can be used in TVs:
BBK LT3209S (Panel V320B1-L04 Rev.C1), BBK LT4005S (Panel LTA400WT-L11).
PSU Advanced
The LT3209S model uses a 200-P00-HM150H power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the L6562D PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the BBK LT3209S device:
Installed matrix (LCD panel) V320B1-L04 Rev. C1.
The matrix control uses the Timing Controller (T-CON) V315B1-C01 ;.
To power the backlight, a converter is used, combined with a power supply, controlled by a PWM controller SG3525A, D78F9222CX. A transformer TLT1492 7Z01 is installed in the inverter converter. As power elements of the inverter, keys of the type FDS6679AZ, STM4410A are used.
The necessary supply voltages for all nodes of the TV BBK LT3209S are generated by the power module 200-P00-HM150H, or its analogs using microchips L6562D (PFC), OB2262 (PWM SOT23-6) and power switches of the type 18N50; 7N65C; 9N50CF - 2pcs.
MainBoard - the main board (motherboard) is a 200-107-JK371XP-CH module using MT8293AE HY5DU281622FTP-5 GS3257S1G TDA8932 chips and others.
The M09WPP-2P-E tuner provides TV reception and channel tuning.
Information from an alternative source:
BBK LT3209S Same chassis for CAMERON 3707; NOVEX NL-32S701
Panel Type (Matrix): PV320TVM
T-con: V315B1-C01, CM2681A-KQ, EM636165TS-7G - 2pcs, AS15-G, AT1380AP
Motherboard: 200-107-JK371XP-CH REV: C, Prots -? (under the radiator), MT8293AE, HY5DU281622FTP-5 - 2 pcs., GS3257S1G - 3 pcs., TDA8932, Tuner: M09WPP-2P-E
PSU & Invertor: 200-P00-HM150H, L6562D, STM4410A, FDS6679AZ, SG3525A, D78F9222CX, 18N50; 7N65C; 9N50CF - 2pcs., TLT1492 7Z01 - 2pcs.
Additional technical information about the panel:
Brand: CMO
Model: V320B1-L04
Type: a-Si TFT-LCD, Panel
Diagonal size: 32.0 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 708.954x398.592 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 75%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
BBK LT3209S LCD TV with V320B1-L04 LCD, 32 "(81 cm) diagonal size in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Maximum brightness to minimum ratio (contrast) ) is 1000: 1. It is possible to view images in high quality HD with a resolution of 1366x768 pixels in the standard for 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 standard max 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound speaker system 20 W (2x10 W) provide 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 x2, audio x5, 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, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 200 watts.
Overall dimensions: 792x657x270 mm.
TV Weight: 20 kg.
Attention! The BBK LT3209S LCD TV panel V320B1-L04 Rev. C1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!