Technical description and composition of the AKAI LEA-32M19P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-32M19P
Chassis / Version: T.VST59.A1
Panel: MT3151A05-2
T-CON: MT3151A05-1-XC-3
LED driver (backlight): integrated into PSU
PWM LED driver: CB3350CP
Power Supply (PSU): LK-PL270603A CQC04001011196
PWM Power: OB2273 (6pin)
MainBoard: T.VST59.A1
IC MainBoard: CPU: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2;
Technical Specifications LEA-32M19P
AKAI LEA-32M19P
General repair guidelines for TV LCD LED
If the power module LK-PL270603A - CQC04001011196 is malfunctioning, the external manifestations may be different, for example, the AKAI LEA-32M19P does not turn on at all and there is no indication of the indicator lights on the front panel. 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.
Power switches in pulsed power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the OB2273 PWM controller chip (6pin), which can only be checked by replacing it with a new or obviously working one.
If the AKAI LEA-32M19P does not have an image, but there is sound, there may be a malfunction of the backlight LEDs of the MT3151A05-2 panel or their power converter - LED driver.
In case of breaks in the LED circuit, a complete disassembly of the panel is required, the LEDs are checked for an open circuit, as well as the reliability of the connections in the connectors and rations of the terminals.
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.
In cases of attempts to repair the motherboard T.VST59.A1, it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed with local heating.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2; and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Attention! For users and owners of LEA-32M19P TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
Repair MainBoard
The appearance of MainBoard T.VST59.A1 is shown in the figure below:
T.VST59.A1
T.VST59.A1 can be used on TVs:
AKAI LEA-32M19P (Panel MT3151A05-2), ERISSON 32LEB15 (Panel MT3151A05-2 V2.1 ), ERISSON 42LEB15 (Panel T420HW08 V.5 FHD).
The appearance of the power supply
Key Features of the AKAI LEA-32M19P:
Installed matrix (LED panel) MT3151A05-2.
The matrix control uses the Timing Controller (T-CON) MT3151A05-1-XC-3.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a CB3350CP PWM controller.
The necessary supply voltages for all nodes of the TV AKAI LEA-32M19P are generated by the power module LK-PL270603A, or its analogs using OB2273 chips (6pin).
MainBoard - the main board (motherboard) is a T.VST59.A1 module, using CPU chips: TSUMV59XE-Z1; SPI Flash: W25Q32; SOUND: TPA3124D2; and others.
Additional technical information about the panel:
Brand: CSOT
Model: MT3151A05-2
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: HVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 62%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Brand: AKAI, Model: LEA-32M19P.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 10W, HDMI connectors: 3.
The composition uses MainBoard T.VST59.A1 and an LCD panel (matrix) MT3151A05-2.
Power Supply Unit (PSU) LK-PL270603A CQC04001011196 Power Supply.
TV AKAI LEA-32M19P with LCD display MT3151A05-2, diagonal size 32 "(81 cm) 16: 9 format. The required brightness of the screen 300 cd / m² is provided by LED backlight LED. The ratio of maximum brightness to minimum (contrast) is 1200 : 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, DivX, MKV, JPEG.
The power of the sound system 10 W (2x5 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, VGA, HDMI x3, 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 50 watts.
Overall dimensions: With stand 736x495x200 mm, Without stand 736x440x75 mm.
The mass of the TV: 6.2 kg.
Attention! The MT3151A05-2 panel of the AKAI LEA-32M19P 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.