Technical description and composition of the AKIRA 32LED38P TV, type of panel and applicable modules. The composition of the modules.AKIRA LED
Model: 32LED38P
Chassis / Version: TP.VST59.PB819
Panel: ST3151A05-8
T-CON: MT3151A05-5-XC-9; CSH11-C0H, CS902-A, CS801-B
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
MOSFET LED driver: ME15N10-G
Power Supply (PSU): integrated into MainBoard
MainBoard: TP.VST59.PB819
IC MainBoard: CPU: TSUMV59XE-Z1, SPI FLASH: MX25L3205
Specifications 32LED38P
AKIRA 32LED38P
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The AKIRA 32LED38P TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In such cases, the common power source, the AC / DC voltage converter, which is combined with the elements of the main board TP.VST59.PB819, is often faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
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.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits are usually checked by replacement with new ones, or obviously working.
- 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.
In most of these cases, a malfunction is detected in the nodes and backlight elements of the LED panel. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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.
- 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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the SPI FLASH elements: MX25L3205. BGA chip malfunctions are usually easy to detect by warming up.
Owners and users of the AKIRA 32LED38P TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> AKIRA 32LED38P, Main: TP.VST59.PB819, Panel: ST3151A05-8
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 AKIRA 32LED38P device:
Installed matrix (LED panel) ST3151A05-8.
The matrix control uses the Timing Controller (T-CON) MT3151A05-5-XC-9 ;.
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 made according to the flyback AC / DC voltage converter circuit.
MainBoard - the main board (motherboard) is a module TP.VST59.PB819, using CPU chips: TSUMV59XE-Z1, SPI FLASH: MX25L3205 and others.
Additional technical information about the panel:
Brand: CSOT
Model: ST3151A05-8
Type: a-Si TFT-LCD, CELL
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)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 7.16% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 62%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Brand: AKIRA, Model: 32LED38P.
Briefly from the TV: LCD, LED backlight, 32 ", 1366x768, 720p HD, sound: 12 watts.
The composition uses MainBoard TP.VST59.PB819 and an LCD panel (matrix) ST3151A05-8. The power supply is combined with the MainBoard.
TV AKIRA 32LED38P with LCD display ST3151A05-8, diagonal size 32 "(81 cm) 16: 9 format. The LCD panel technology of this TV uses LED LED backlight. You can watch in high quality HD at a resolution of 1366x768 pixels in standard 720p (HD Ready). The input high-frequency or video signal is decoded in PAL, SECAM, NTSC analog systems. Digital signal generation (graphic format) is performed in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Multimedia formats are supported: MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the sound system 12 W (2x6 W) provide 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, component, VGA, HDMI, USB. A headphone jack is provided. A standard VGA (D-Sub 15) connector is used to connect a laptop or computer. This interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV working in the network mode is 60 watts.
Overall dimensions: With stand 731x468x166 mm, Without stand 731x437x87 mm.
The mass of the TV: 5.2 kg.
Attention! The ST3151A05-8 panel of the AKIRA 32LED38P 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.
