Technical description and composition of the AKAI LEA-24V60P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-24V60P
Chassis / Version: TP.S512.PA63
Panel: MV236FHB-N10
LED backlight: EDGE LED
T-CON: MV236FHB-N10
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
MOSFET LED driver: PA1108DA
Power Supply (PSU): integrated into MainBoard
PWM Power: LD5530
MainBoard: TP.S512.PA63
IC MainBoard: CPU: S2T512, SPI Flash: 25Q64, Audio: YD1517P
Tuner: XF-3SDT-H T3 / 1R1 / 646
Technical Specifications LEA-24V60P
AKAI LEA-24V60P
General repair guidelines for TV LCD LED
Possible malfunctions
- The AKAI LEA-24V60P 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.
The malfunction in such cases, first of all, should be sought in the power elements of a switching power supply (IIP) - a network voltage converter (AC / DC), which in this TV model is combined with the MainBoard TP.S512.PA63 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 the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most 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) LD5530, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. 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.
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, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the TP.S512.PA63 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). Often, the MB (SSB) card needs to be replaced in case of complex faults that are difficult to detect. When trying to repair, you should check its elements - S2T512, 25Q64, YD1517P 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.
Before changing the tuner XF-3SDT-H T3 / 1R1 / 646, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
We recommend the owners of the LEA-24V60P TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
FIRMWARE FOR SPI FLASH -----------> FLASH 25Q64 AKAI LEA-24V60P, Main: TP.S512.PA63, Panel: MV236FHB-N10
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main TP.S512.PA63
The LED current in the panel = 276mA, if you remove the 3.3 Ohm resistor, the current will decrease to 221mA.The appearance of MainBoard TP.S512.PA63 is shown in the figure below:
TP.S512.PA63
TP.S512.PA63 can be used in TVs:
Aiwa 24le7021 .
Key Features of the AKAI LEA-24V60P:
Installed matrix (LED panel) MV236FHB-N10.
The matrix control uses the Timing Controller (T-CON) MV236FHB-N10.
To power the backlight LEDs, a converter is used, combined with the TP.S512.PA63 main board, controlled by the SN51DP PWM controller. As the power elements of the LED driver, keys of the type PA1108DA are used.
The power module is combined with MainBoard and is made according to the flyback AC / DC voltage converter circuit using LD5530 microcircuits.
MainBoard - the main board (motherboard) is a TP.S512.PA63 module, using CPU chips: S2T512, SPI Flash: 25Q64, Audio: YD1517P and others.
Tuner XF-3SDT-H T3 / 1R1 / 646 provides the reception of television programs and tuning to channels.
Brand: AKAI, Model: LEA-24V60P.
Briefly from the TV: LCD, LED backlight, 23.6 ", 1920x1080, 1080p Full HD, sound: 6 watts.
The composition uses MainBoard TP.S512.PA63 and LCD-panel MV236FHB-N10. The power supply is combined with the MainBoard.
AKAI LEA-24V60P TV with an MV236FHB-N10 LCD, 23.6 "(60 cm) diagonal size of 16: 9 format. The required screen brightness of 180 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. Edge TV is equipped with lateral LED illumination in this model, and the TV’s design and technical features include viewing programs and movies in high quality HD with a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Supported media file formats ia: MP3, MPEG4, MKV, JPEG.
The power of the acoustic system of sound 6 W (2x3 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. An output for connecting headphones is provided. A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: with a support 557x369x180 mm, without a support 557x340x75 mm.
TV Weight: with stand: 2.57 kg, without stand: 2.35 kg.
Attention! The MV236FHB-N10 panel of the AKAI LEA-24V60P 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.