Technical description and composition of the BBK LEM3282DT TV, type of panel and applicable modules. The composition of the modules.BBK LED
Model: LEM3282DT
Chassis / Version: MSDV3209-ZC01-01
Panel: V315B1-LEA
MainBoard: MSDV3209-ZC01-01 (D)
IC MainBoard: Cpu: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR, Audio: TPA3113D2
Tuner: DT58WT-3RB-E
Technical Specifications LEM3282DT
BBK LEM3282DT
General repair guidelines for TV LCD LED
It is advisable to start repairing the BBK LEM3282DT TV with a careful external examination of both internal and external elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. If charred resistors, swollen electrolytic or cermet capacitors, ring cracks in the soldered terminals of transformers or heating elements are detected, it is advisable to establish the causes and consequences of the malfunction that has arisen, as well as to check the connected elements and assemblies.
If the BBK LEM3282DT does not turn on, no control lights on the front panel light up or blink; therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the filters of the secondary rectifiers (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If there is no image when you turn on the BBK LEM3282DT, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the V315B1-LEA panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
On the motherboard MSDV3209-ZC01-01 (D), in the event of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update 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 - Cpu: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR, Audio: TPA3113D2 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 DT58WT-3RB-E tuner, if there is no tuning for the channels, first check the supply voltage at its terminals.
Remember! Attempts to self-repair by users of the BBK LEM3282DT TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service Manual with Schematic Diagram 81 pages of 2010 on the model LED1952DTG, LED2252FDTG, LED2452FDTG, LEM2249FDT, LEM2265FDTG, LEM2285FDTG, LEM2449FDT, LEM2465FDTG, LEM2485FDTG, LEM2648DT, LEM2649FDT, LEM2665FDTG, LEM3281FDT, LEM3282DT, LEM3285FDTG
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main MSDV3209-ZC01-01 Schematic diagram
FIRMWARE FOR SPI FLASH -----------> BBK LEM3282DT, Main: MSDV3209-ZC01-01(D), Panel: V315B1-LEA
The appearance of the MainBoard MSDV3209-ZC01-01 is shown in the figure below:MainBoard MSDV3209-ZC01-01 uses a multifunctional microprocessor of the type MSD309PX or MSD308PX with an integrated scaler. Two RAM chips W9751G6IB are used as RAM. SPI Flash MX25L6406EMI-12G is made in the SOP-16 (16 pin) package.
It is advisable to start the repair of the motherboard by checking the voltage + 5V standby mode. In the operating mode, it is necessary to check the operability of linear stabilizers and power converters of the processor, memory, panel and other components of the board.
MSDV3209-ZC01-01 can be used in TVs:
BBK LEM3281FDT (Panel V315B1-LE9 REV.C1), BBK LEM3285FDTG (Panel V315H4-LE7 REV.C1), BBK LEM1949DT (Panel HT185WX3-100), BBK LEM3248DT (Panel V315B1-LE7 REV.C1), BBK LEM2665FDTG (Panel V260H1-LE8), BBK LEM3249FDT (Panel V315H4-LE8), BBK LEM2449FDT (Panel M236MWF7), BBK LEM3282DT (Panel V315B1-LEA), MYSTERY MTV-4018LW (Panel T390HVN01.0), MYSTERY MTV-4022LW (Panel M390HJ1-P01), MYSTERY MTV-4214LW (Panel T420HW08 V.5 FHD), MYSTERY MTV-3214LW (Panel V315H4-LE2 Rev.C1), MYSTERY MTV-4217LW (Panel T420HW09 V.9 (FHD)), MYSTERY MTV-3220LW (Panel V315H4-LE7).
Main features of the BBK LEM3282DT device:
Installed matrix (LED-panel) V315B1-LEA.
The required supply voltage for all nodes of the BBK LEM3282DT TV provides a switching power supply.
MainBoard - the main board (motherboard) is an MSDV3209-ZC01-01 module, using Cpu chips: MSD309PX-LF-Z, Spi Flash: MX25L6406EMI-12G, DDR: H5PS5162FFR, Audio: TPA3113D2 and others.
Tuner DT58WT-3RB-E provides the reception of television programs and tuning to channels.