Technical description and composition of the AKAI LEA-32P37P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-32P37P
Chassis / Version: TP.VST59.PB819
Panel: E32-OA35 // ST3151A05-8 Ver. 2.2
T-CON: CS11102
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
MOSFET LED driver: ME15N10-G
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.VST59.PB819 RN41-LEB819-MA-14-T
IC MainBoard: CPU: TSUMV59XE-Z1, SPI FLASH: MX25L3205
Tuner: NoName
Technical Specifications LEA-32P37P
AKAI LEA-32P37P
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The AKAI LEA-32P37P TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
First of all, in such cases, you should verify the operability of the common switching power supply (IIP) - AC / DC voltage converter of the mains voltage. All source elements in this TV model are located on the MainBoard TP.VST59.PB819 main board. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
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 an excess of the maximum current or voltage. 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) PWM SOT23-6, 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 and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the TP.VST59.PB819 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing CPU elements: TSUMV59XE-Z1, SPI FLASH: MX25L3205 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
In cases where there is no 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 NoName tuner. 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.
Attention TV owners! Attempts to self-repair AKAI LEA-32P37P are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-32P37P Panel: E32-OA35, Main: TP.VST59.PB819
The appearance of MainBoard TP.VST59.PB819 is shown in the figure below:TP.VST59.PB819
TP.VST59.PB819 can be used in TVs:
AKAI LEA-32P37P (Panel E32-OA35), AKIRA 32LED38P (Panel ST3151A05-8), TELEFUNKEN TF-LED28S12 (Panel ST2751A01-8).
Key Features of the AKAI LEA-32P37P:
The matrix (LED panel) E32-OA35 or ST3151A05-8 Ver.2.2 is installed.
The matrix control uses the Timing Controller (T-CON) CS11102.
To power the backlight LEDs, a converter is used, combined with the main board TP.VST59.PB819, controlled by the SN51DP PWM controller. As power elements of the LED driver, keys of the type ME15N10-G are used.
The power module is combined with the MainBoard and is designed according to the flyback AC / DC voltage converter using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a module TP.VST59.PB819, using CPU chips: TSUMV59XE-Z1, SPI FLASH: MX25L3205 and others.
The NoName tuner provides television reception and channel tuning.
Brand: AKAI, Model: LEA-32P37P.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 12 watts.
The composition uses MainBoard TP.VST59.PB819 RN41-LEB819-MA-14-T and the LCD panel (matrix) E32-OA35, or ST3151A05-8 Ver.2.2. The power supply is combined with the MainBoard.
The AKAI LEA-32P37P TV with an E32-OA35 32 ”(81 cm) diagonal LCD display is 16: 9 in size. The required screen brightness of 200 cd / m² is provided by LED backlighting. This model uses side LED backlighting LED Edge. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready) 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, audio x2, component, VGA, HDMI, USB. An output for connecting headphones is provided.
Overall dimensions: With stand 731x468x166 mm, Without stand 731x437x87 mm.
The mass of the TV: 5.2 kg.
Attention! The E32-OA35 panel of the AKAI LEA-32P37P 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.
