Technical description and composition of the AKAI LEA-32M12M TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-32M12M
Panel: S315BH42A-03 / IPSVVF32H122G00
T-CON: MDK336V-0W 19100209
LED driver (backlight): LKP-LE023 LK-LE320212A
Power Supply (PSU): LK-SP406001A ZG-95 (G) F
MainBoard: LM2FC_V1.5 PA20347-2--61ZG
IC MainBoard: CPU: MST6M181VS; SPI Flash: 25Q32B; SOUND: R2A15122
Tuner: YFC-C1W-DKA
Control: LKP-LE023 LK-LE320212A
Technical Specifications LEA-32M12M
AKAI LEA-32M12M
General repair guidelines for TV LCD LED
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the LK-SP406001A ZG-95 (G) F power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the image appears and immediately disappears when the TV is turned on, or it is initially absent when it is turned on, but the sound has other functions, there is a high probability of a malfunction of the display backlight LEDs or the LED driver (power converter for the IPSVVF32H122G00 S315BH42A-03 panel backlight assembly).
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
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.
Repair or diagnostics of the LM2FC_V1.5 PA20347-2--61ZG motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, you should update 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 CPU elements: MST6M181VS; SPI Flash: 25Q32B; SOUND: R2A15122 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can be diagnosed by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner YFC-C1W-DKA and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
It should be remembered! Attempts to repair the TV AKAI LEA-32M12M, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of the MainBoard LM2FC_V1.5 is shown in the figure below:LM2FC_V1.5
The appearance of the power supply
Key Features of the AKAI LEA-32M12M:
Installed matrix (LED panel) S315BH42A-03 / IPSVVF32H122G00.
The matrix control uses the Timing Controller (T-CON) MDK336V-0W.
The LED driver LKP-LE023 is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the AKAI LEA-32M12M TV is carried out by the power module LK-SP406001A, or its analogues.
MainBoard - the main board (motherboard) is an LM2FC_V1.5 module, using CPU chips: MST6M181VS; SPI Flash: 25Q32B; SOUND: R2A15122 and others.
The YFC-C1W-DKA tuner provides TV reception and channel tuning.
Brand: AKAI, Model: LEA-32M12M.
Shortly from the TV: LCD, 720p HD, diagonal 32 "(81 cm), HDMI: 2, USB, backlight type: Edge LED.
The composition includes MainBoard LM2FC_V1.5 PA20347-2--61ZG and an LCD panel (matrix) S315BH42A-03 / IPSVVF32H122G00.
Power Supply Unit (PSU) LK-SP406001A ZG-95 (G) F Power Supply.
AKAI LEA-32M12M TV with S315BH42A-03 LCD, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 500 : 1. This model uses Edge LED lateral LED illumination. You can view images in high quality HD at 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 about Digital signal processing and generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound system 12 W (2x6 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 x2, audio x2, component, VGA, HDMI x2, USB. 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.
The power consumed by the TV working in the network mode is 70 watts.
Overall dimensions: With stand 762x551x253 mm, Without stand 762x482x55 mm.
Attention! The S315BH42A-03 / IPSVVF32H122G00 panel of the AKAI LEA-32M12M 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.