BBK LED
Model: LEM3285FDTG
Panel: V315H4-LE7 REV.C1
T-CON: V320HJ1-PE1; CM2802A, CM501
LED driver (backlight): TV3232-ZC02-01 (A) KB-6160
PWM LED driver: AP3608EM-G1 AP3039AM-G1
MOSFET LED driver: B6010D
Power Supply (PSU): TV3207-ZC02-01 (C) 303C3207063
PWM Power: OB2263, ICE3B0565 (Standby)
MOSFET Power: FDPF7N65, AO4435
MainBoard: MSDV3209-ZC01-01 (D) 222-111105004
IC MainBoard: MSD309PX-LF-Z1, NT5TU64N1666-AC, WX25L6486EMI-126
Tuner: DT58WT-3RB-E
Control: RC-LEM100; Service mode: SOURCE 2580
Technical Specifications LEM3285FDTG
BBK LEM3285FDTG
General repair guidelines for TV LCD LED
Possible malfunctions
- The BBK LEM3285FDTG TV does not turn on, does not respond to the remote control and control panel buttons, does not blink with any indicators.
In most such cases, the main switching power supply TV3207-ZC02-01 is found to be faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the operability of the power switches (FDPF7N65, AO4435) 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) OB2263, ICE3B0565 (Standby). 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.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction will either be cut off or broken into short-circuit.
- 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 motherboard MSDV3209-ZC01-01 should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements MSD309PX-LF-Z1, NT5TU64N1666-AC, WX25L6486EMI-126, AP3608EM-G1 requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
The malfunction of the tuner DT58WT-3RB-E is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
TV users and owners need to remember that attempts to self-repair a BBK LEM3285FDTG TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main MSDV3209-ZC01-01 Schematic diagram.
SCHEMATIC DIAGRAM ------------------> TV3207-ZC02-01
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
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).
The appearance of the power supply
Main features of the BBK LEM3285FDTG device:
Installed matrix (LED-panel) V315H4-LE7 REV.C1.
The matrix control uses the Timing Controller (T-CON) V320HJ1-PE1 ;.
The LED driver TV3232-ZC02-01 (A) is used to power the backlight LEDs, it is controlled by the AP3608EM-G1 AP3039AM-G1 PWM controller. As power elements of the LED driver, keys of the type B6010D are used.
The necessary supply voltages for all nodes of the BBK LEM3285FDTG TV are generated by the TV3207-ZC02-01 power supply module or its analogs using OB2263, ICE3B0565 (Standby) microchips and power switches of the FDPF7N65, AO4435 type.
MainBoard - the main board (motherboard) is an MSDV3209-ZC01-01 module, using microchips MSD309PX-LF-Z1, NT5TU64N1666-AC, WX25L6486EMI-126 and others.
Tuner DT58WT-3RB-E provides the reception of television programs and tuning to channels.
Information from an alternative source:
BBK LEM3285FDTG
Panel Type (Matrix): V315H4-LE7 Rev. C1
Motherboard: MSDV3219-ZC01-01, MSD309PX-LF-Z1, NT5TU64N1666-AC x2, WX25L6486EMI-126, AP3608EM-G1, Tuner: DT58Wt-3RB-E
T-con: V320HJ1-PE1 Rev. C6, CM2802A, CM501
Remote control: RC-LEM100 mode: SOURCE, 2580
BBK LEM3285FDTG LED TV with V315H4-LE7 LCD, 32 "(81 cm) diagonal size of 16: 9 format. The required screen brightness of 450 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 4000 : 1. This model uses Edge LED backlighting, and the design and technical features of the TV include watching broadcasts and movies in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Input high-frequency or video signal l can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG .
The power of the sound system 16 W (2x8 W) provides 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, audio x2, component, SCART, RGB, VGA, HDMI x2, USB. 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, 1920x1080. The digital tuner is capable of receiving television channels in DVB-T MPEG4 standards.
The power consumed by the TV in the operating mode from the network is 75 watts.
Overall dimensions: With stand 781x528x200 mm, Without stand 781x496x42 mm.
The mass of the TV: 10.8 kg.
Attention! The V315H4-LE7 REV.C1 panel of the BBK LEM3285FDTG LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.