Technical description and composition of the AKAI LEA-32A08G TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-32A08G
Chassis / Version: TP.VST59S.P89
Panel: LC320EXN (SE) (E1)
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: LD7536
MainBoard: TP.VST59S.P89
IC MainBoard: CPU: TSUMV59XES-XG, Spi Flash: W25Q32
Tuner: R620D
Technical Specifications LEA-32A08G
AKAI LEA-32A08G
General repair guidelines for TV LCD LED
Failures of the power module combined with Mainboard TP.VST59S.P89 can be expressed in different ways, for example, the AKAI LEA-32A08G TV does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the LD7536 PWM controller circuit or broken resistors in its wiring.
If there is no image when you turn on the AKAI LEA-32A08G, or it appears and immediately disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LC320EXN (SE) (E1) panel, or in the LED node of the driver-converter of their power supply.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
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.
On the TP.VST59S.P89 motherboard, in case of a malfunction, you should first check the operation of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software).
In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - Cpu: TSUMV59XES-XG, Spi Flash: W25Q32. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before changing the Tuner tuner, if it is not possible to tune to television channels, you should make sure that there are supply voltages that must be measured at the corresponding tuner pins and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to users! Self-repair of the AKAI LEA-32A08G TV without the appropriate qualifications and experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-32A08G, Main: TP.VST59S.P89, Panel: LC320EXN (SE)(E1)
The appearance of MainBoard TP.VST59S.P89 is shown in the figure below:TP.VST59S.P89
The TP.VST59S.P89 motherboard is combined with a power module and is an independent device made on the basis of the TSUMV59Xxx multifunction processor. Repair of such a board must begin by checking the power batteries, as well as the operability of voltage converters and linear stabilizers, necessary to provide power to certain processor nodes, in particular: + 1.2V core power, built-in DDR + 1.8V memory and Stand- by 3.3V. The power supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.
TP.VST59S.P89 can be used in TVs:
AKAI LEA-32A08G (Panel LC320EXN (SE)(E1)), AKAI LEA-28A08W (Panel ST2751A01-1), DEXP 32A3300 (Panel JHD315GH-E52), DNS H32A30 (Panel JHD315GH-E52), FUSION FLTV-32L42B (Panel KM315E3-CS-02), TELEFUNKEN TF-LED32S6 (Panel CX315DLEDM ST3151A05-5).
Key Features of the AKAI LEA-32A08G:
Installed matrix (LED-panel) LC320EXN (SE) (E1).
To power the backlight LEDs, a converter is used, combined with the TP.VST59S.P89 main board, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using LD7536 microcircuits.
MainBoard - the main board (motherboard) is a TP.VST59S.P89 module, using Cpu chips: TSUMV59XES-XG, Spi Flash: W25Q32 and others.
The R620D tuner provides TV reception and channel tuning.
Brand: AKAI, Model: LEA-32A08G.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 12 W, HDMI connectors: 2.
The composition uses MainBoard TP.VST59S.P89 and an LCD panel (matrix) LC320EXN (SE) (E1). The power supply is combined with the MainBoard.
AKAI LEA-32A08G TV with LC320EXN LCD, 32 "(81 cm) diagonal size in 16: 9 format. The required screen brightness of 380 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1200: 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 abotka and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:. MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the sound system 12 W (2x6 W) provides 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 x2, audio x3, component x2, VGA, HDMI x2, USB x2. 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 85 watts.
Overall dimensions: With stand 772x546x200 mm, Without stand 772x486x46 mm.
The mass of the TV: 13.7 kg.
Attention! The LC320EXN (SE) (E1) panel of the AKAI LEA-32A08G 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.
