Technical description and composition of the AKAI LES-65B47M TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LES-65B47M
Chassis / Version: T.MS3463S.81
Panel: LSC650FN08-W
T-CON: 16Y_65BFU11BPCMA4V0.1
LED driver (backlight): VS.NT7331 Ver: V1
Power Supply (PSU): AMP5865TL-MS900 REV: 1.0
MainBoard: T.MS3463S.81 & B.S805.5
IC MainBoard: CPU: MSD3463, SPI Flash: GD25Q64
Tuner: XF-3SDT-H + SAT
Control: IR: DVB-PM75505HAI
Technical Specifications LES-65B47M
AKAI LES-65B47M
General repair guidelines for TV LCD LED
Possible malfunctions
- The AKAI LES-65B47M TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
Often in such cases, the AMP5865TL-MS900 power module is faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes for possible breakdown (short circuit).
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often 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. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
Often in such cases, there is no LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the T.MS3463S.81 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MSD3463, SPI Flash: GD25Q64 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the XF-3SDT-H + SAT tuner, if there is no tuning for the channels, 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, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Repair MainBoard
The appearance of MainBoard T.MS3463S.81 is shown in the figure below:
T.MS3463S.81
The appearance of the power supply
Key features of the AKAI LES-65B47M device:
Installed matrix (LED-panel) LSC650FN08-W.
The matrix control uses the Timing Controller (T-CON) 16Y_65BFU11BPCMA4V0.1.
The LED driver VS.NT7331 is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the TV AKAI LES-65B47M is carried out by the power module AMP5865TL-MS900, or its analogues.
MainBoard - the main board (motherboard) is a T.MS3463S.81 module, using CPU chips: MSD3463, SPI Flash: GD25Q64 and others.
The XF-3SDT-H + SAT tuner provides TV reception and channel tuning.
Brand: AKAI, Model: LES-65B47M.
Briefly from the TV: LCD, LED backlight, 65 ", 1920x1080, 1080p Full HD, DVR, there is a satellite tuner, sound: 16W, HDMI: 2, Internet access, Wi-Fi, Smart TV.
The composition uses MainBoard T.MS3463S.81 & B.S805.5 and LCD-panel LSC650FN08-W.
Power Supply Unit (PSU) AMP5865TL-MS900 REV: 1.0 power Supply.
AKAI LES-65B47M TV with a LSC650FN08-W LCD, diagonal size 65 "(165 cm) in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 3000 : 1. Direct LED backlighting is used in the LCD panel.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD).
The LES-65B47M TV model has built-in SMART software and pre-installed Android Operating System. Connecting to a network can be done via Wi-Fi. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by 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, component, VGA, HDMI x2, USB x4, Ethernet (RJ-45), Wi-Fi 802.11n. An output for connecting headphones is provided. The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
The power consumed by the TV working in the network mode is 230 watts.
Overall dimensions: With a support of 1459x894x310 mm, Without a support of 1459x839x74 mm.
Mass of the TV: 23.5 kg.
Attention! The LSC650FN08-W panel of an AKAI LES-65B47M 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.
