Technical description and composition of the AKAI LEA-32M12W TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-32M12W
Chassis / Version: LM2FC_V1.7
Panel: LS315PAWSA
LED backlight: LB3576012 (5630) B 40
T-CON: 315-V1.1 PA20379-2--11ZG
LED driver (backlight): LKP-LE023 LK-LE320212B
Power Supply (PSU): LK-SP406001A LKP-SP016
MainBoard: LM2FC_V1.7 PA20378-2 —11ZG
IC MainBoard: SPI Flash: 25Q32
Tuner: YFS-C1W-DKA
Control: PYR0003-2GG + PFA0017-2 --- SZG
Technical Specifications LEA-32M12W
AKAI LEA-32M12W
General repair guidelines for TV LCD LED
Possible malfunctions
- The AKAI LEA-32M12W 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.
Failure in such cases should begin to be sought in the power supply circuits of the LK-SP406001A. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of converters for possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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 the excess of maximum current or voltage values. 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, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
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.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the LM2FC_V1.7 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit 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: 25Q32 with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the YFS-C1W-DKA 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.
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-32M12W, Main: LM2FC_V1.7 PA20378-2 —11ZG , Panel: LS315PAWSA
The appearance of the MainBoard LM2FC_V1.7 is shown in the figure below:LM2FC_V1.7
The appearance of the power supply
Key Features of the AKAI LEA-32M12W:
Installed matrix (LED panel) LS315PAWSA.
The matrix control uses the Timing Controller (T-CON) 315-V1.1.
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-32M12W TV is carried out by the power module LK-SP406001A, or its analogues.
MainBoard - the main board (motherboard) is an LM2FC_V1.7 module, using SPI Flash chips: 25Q32 and others.
The YFS-C1W-DKA tuner provides television reception and channel tuning.
Brand: AKAI, Model: LEA-32M12W.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 12 W, HDMI connectors: 2.
The composition uses MainBoard LM2FC_V1.7 PA20378-2 —11ZG and LCD-panel LS315PAWSA.
Power Supply Unit (PSU) LK-SP406001A LKP-SP016 Power Supply.
TV AKAI LEA-32M12W with LCD LS315PAWSA, diagonal size 32 "(81 cm) in 16: 9 format. The required brightness of the screen is 350 cd / m² LED backlight LED. The ratio of maximum brightness to minimum (contrast) is 500: 1 This model uses Edge LED side illumination. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of 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 LS315PAWSA panel of the AKAI LEA-32M12W 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.