Technical description and composition of the AKAI LEA-22A08G TV, type of panel and applicable modules. The composition of the modules.AKAI LED
Model: LEA-22A08G
Panel: LM215WF4 (TL) (E7)
T-CON: LM215WF4-TLE7; LVDS: SW0644,0ISWL-0093A, DC / DC: SM4028
LED driver (backlight): integrated into PSU
PWM LED driver: BIT3251
Power Supply (PSU): MP113-QL
PWM Power: PWM SOT23-6 (BAxxx)
MainBoard: AS-MST6M181VS-LE1
IC MainBoard: CPU: MST6E181VS, SDRAM: M13S2561616A, Q32B0104HIP, YD1517P (18pin), FR9888 = MP1484EN
Tuner: ET-6N1E-CF101R
Technical Specifications LEA-22A08G
AKAI LEA-22A08G
General repair guidelines for TV LCD LED
If the TV does not turn on, no control lights are on or blinking, there are no sounds when you turn on, and there is not the slightest sign of operability - the most likely malfunction is in the power module. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the filter of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip BIT3251, BA1T18 may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
Sometimes the AKAI LEA-22A08G TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a possibility of a malfunction of the LED driver - power converter for the backlight LEDs of the LM215WF4 (TL) panel (E7), or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the operability of the electrolytic capacitors of the filter by supplying the backlight unit.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
To check the health in the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED individually with a simple Chinese multimeter (powered by 9 volts) in the P-N-junction test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. A zener diode PN junction indirectly indicates a LED-a
Repair of the motherboard AS-MST6M181VS-LE1 must begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
When repairing an MB board, you must check its CPU components: MST6E181VS, SDRAM: M13S2561616A, Q32B0104HIP, YD1517P (18pin), FR9888 = MP1484EN. Defective items should be replaced. If BGA chips are installed, their malfunction is usually localized by heating.
In the absence of 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 voltages on the terminals of the tuner ET-6N1E-CF101R. 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.
It should be remembered! Attempts to repair the AKAI LEA-22A08G TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
The appearance of MainBoard AS-MST6M181VS-LE1 is shown in the figure below:AS-MST6M181VS-LE1
AS-MST6M181VS-LE1 can be used in TVs:
AKAI LTA-15A15M (Panel LTA150XH-L06), AKAI LEA-22A08G (Panel LM215WF4 (TL)(E7)), AKAI LEA-19A08G (Panel LM185WH2-TLA1).
The appearance of the power supply
Key Features of the AKAI LEA-22A08G:
The matrix (LED panel) LM215WF4 (TL) (E7) is installed.
The matrix control uses the Timing Controller (T-CON) LM215WF4-TLE7 ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a BIT3251 PWM controller.
The required supply voltages for all nodes of the TV AKAI LEA-22A08G are generated by the MP113-QL power module or its analogs using PWM SOT23-6 (BAxxx) microcircuits.
MainBoard - the main board (motherboard) is an AS-MST6M181VS-LE1 module using CPU chips: MST6E181VS, SDRAM: M13S2561616A, Q32B0104HIP, YD1517P (18pin), FR9888 = MP1484EN and others.
The ET-6N1E-CF101R tuner provides television reception and channel tuning.
Information from an alternative source:
AKAI LEA-22A08G
Panel Type (Matrix): LM215WF4 (TL) (E7)
Motherboard: AS-MST6M181VS-LE1, MST6E181VS, SDRAM - M13S2561616A, DC / DC - FR9888, 1517P, Tuner: ET-6N1E-CF101R, T_CON: LM215WF4-TLE7, LVDS -SW0644, 0ISW DC40 / 0040W, DCIS40, ISIS DC28
PSU & LED DRIVER: MP113-QL Specification MP113-A24
Additional technical information about the panel:
Brand: LG Display
Model: LM215WF4-TLE7
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 strings WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: AKAI, Model: LEA-22A08G.
Short from TV: LCD, LED backlight, 22 ", 1920x1080, 1080p Full HD, sound: 6 watts.
The composition uses MainBoard AS-MST6M181VS-LE1 and the LCD panel (matrix) LM215WF4 (TL) (E7).
Power Supply Unit (PSU) MP113-QL Power Supply.
AKAI LEA-22A08G TV with LM215WF4 LCD display, diagonal size 22 "(56 cm) in 16: 9 format. The required brightness of the screen is 250 cd / m² LED backlight LED. The ratio of maximum brightness to minimum (contrast) is 1000: 1 This model uses Edge LED lateral LED backlighting and the TV’s design and technical features provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). Input high-frequency or video signal is to be processed in the analog PAL systems, SECAM, NTSC Image processing and generation of the digital signal occurs in the 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:.. MP3, WMA, MPEG4, DivX, MKV, JPEG.
The power of the acoustic system of sound 6 W (2x3 W) provide 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, VGA, HDMI, 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 40 watts.
Overall dimensions: With stand 540x395x165 mm, Without stand 540x344x50 mm.
TV Weight: 4.8 kg.
Attention! The panel LM215WF4 (TL) (E7) LED-TV AKAI LEA-22A08G 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.
