Technical description and composition of the AKAI LEA-55V59P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-55V59P
Chassis / Version: T.MS3463S.U851
Panel: LSF550FN09-L02
LED backlight: ZN-55HB14BL / R-5L + 5R 61031 V1.1-OT (7 LED)
T-CON: LMC550FN19 16Y_BGU11BPCMTA4V0.1)
LED driver (backlight): integrated into PSU
Power Supply (PSU): PW.168W2.851
MainBoard: T.MS3463S.U851
IC MainBoard: Spi Flash: GD25Q64
Tuner: CDT-9NT372-RF01
Control: IR: MX-32N16-IR T 20140709
Technical Specifications LEA-55V59P
AKAI LEA-55V59P
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The AKAI LEA-55V59P TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
Most likely in this case, the main switching power supply (PPS) PW.168W2.851 is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- 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.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- 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.U851 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 - Spi Flash: GD25Q64 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the tuner CDT-9NT372-RF01. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Once again, remind users! Attempts to self-repair a TV AKAI LEA-55V59P without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-55V59P, Main: T.MS3463S.U851, Panel: LSF550FN09-L02
The appearance of MainBoard T.MS3463S.U851 is shown in the figure below:T.MS3463S.U851
The appearance of the power supply
Key Features of the AKAI LEA-55V59P:
Installed matrix (LED-panel) LSF550FN09-L02.
The matrix control uses the Timing Controller (T-CON) LMC550FN19.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the TV AKAI LEA-55V59P is carried out by the power module PW.168W2.851, or its analogues.
MainBoard - the main board (motherboard) is a T.MS3463S.U851 module, using Spi Flash chips: GD25Q64 and others.
The tuner CDT-9NT372-RF01 provides the reception of television programs and tuning to channels.
Brand: AKAI, Model: LEA-55V59P.
Briefly from the TV: LCD, LED backlight, 55 ", 3840x2160, 4K UHD, DVR, sound: 16W, HDMI: 3.
The composition uses MainBoard T.MS3463S.U851 and an LCD panel (matrix) LSF550FN09-L02.
Power Supply Unit (PSU) PW.168W2.851 Power Supply.
TV AKAI LEA-55V59P with LCD LSF550FN09-L02, diagonal size 55 "(140 cm) 16: 9 format. The required brightness of the screen is 220 cd / m² LED backlight LED. The ratio of maximum brightness to minimum (contrast) is 3000 : 1. Direct LED backlighting is used in the LCD panel. You can watch movies in the highest possible UHD quality with a resolution of 3840x2160 pixels in 4K UHD standard. Supported media file formats: MP3, MPEG4, MKV, JPEG.
The power of the sound speaker system 16 W (2x8 W) is provided by two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x3, USB. An output for connecting headphones is provided. A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: with stand 1244x773x236 mm, without stand 1244x728x97 mm.
TV Weight: 13.6 kg.
Attention! The LSF550FN09-L02 panel of the AKAI LEA-55V59P 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.