Technical description and composition of the AKAI LEA-19V07P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-19V07P
Chassis / Version: T.MS6M181.7A. 11453
Panel: M185B3-LC1 // LM185WH2 (TL) (A1)
LED driver (backlight): HQ-LED60-1E2 // HQ-LED60-1CA
PWM LED driver: HQ9002
MOSFET LED driver: B0210D
Power Supply (PSU): Adapter 12V
MainBoard: T.MS6M181.7A 11453
IC MainBoard: MST6M181VS-LF-Z1, MX25L3205, AIC2857F, SGM330A-YS, YD1517P
Tuner: AFT7 / W130G
Technical Specifications LEA-19V07P
AKAI LEA-19V07P
General repair guidelines for TV LCD LED
Possible malfunctions
- AKAI LEA-19V07P does not turn on at all and does not show any signs of operability. Does not blink indicators and does not respond to control buttons.
In the vast majority of such cases, a malfunction is detected in the power module. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
In most of these cases, a malfunction is detected in the nodes and backlight elements 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.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics motherboard T.MS6M181.7A. you should start 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 must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - U7-AIC2565, U4-AIC2857F, U5-SGM330A-YS, U13-1517P 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.
Attention! For users and owners of LEA-19V07P TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> AKAI LEA-19V07P Chassis: T.MS6M181.7A
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-19V07P, Main: T.MS6M181.7A 11453, Panel: M185B3-LC1
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-19V07P, Main: T.MS6M181.7A 11453, Panel: LM185WH2(TL)(A1)
The appearance of MainBoard T.MS6M181.7A is shown in the figure below:Repair of the motherboard T.MS6M181.7A, which uses the multifunctional processor MST6M181VS combined with a scaler, is advisable to start by checking the power supply of the standby mode, which is implemented using a separate linear stabilizer 3.3V. Further, in the operating mode, it is necessary to check the operability of linear stabilizers or voltage converters necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. A voltage of 2.5V is required to power the DDR W9425G6JH memory. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, it is advisable to measure directly on the LVDS connector. If the TV does not exit Stand-by, does not respond to the remote control and control buttons, update the SPI FLASH software.
T.MS6M181.7A can be used in TVs:
AKAI LEA-19V07P (Panel M185B3-LC1), AKAI LEA-22V07P (Panel M215HGE-L10 Rev.C1), ERISSON 22LEE01 (Panel CLAA215FA04), FUSION FLTV-D22H11 (Panel LQ215M1LGN2), HYUNDAI H-LED19V13 (Panel CX185LEDM ), HYUNDAI H-LED15V7 (Panel N156B6-L0B Rev. C1 / Rev. C2), HYUNDAI H-LEDVD24V10 (Panel M236H3-LA2), RUBIN RB-19S2U (Panel HT185WX1-100), RUBIN RB-22S2UF (Panel LE2360A-V02), RUBIN RB-22S2UFD (Panel 22 "), RUBIN RB-24S2UFD (Panel V236H1-P01).
Key features of the AKAI LEA-19V07P device:
Installed matrix (LED-panel) M185B3-LC1 or LM185WH2 (TL) (A1).
To power the backlight LEDs, the HQ-LED60-1E2 LED driver is used, controlled by the HQ9002 PWM controller. As power elements of the LED driver, keys of the B0210D type are used.
To power all internal components of the AKAI LEA-19V07P TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a module T.MS6M181.7A, using microcircuits MST6M181VS-LF-Z1, MX25L3205, AIC2857F, SGM330A-YS, YD1517P and others.
The AFT7 / W130G tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: M185B3-LC1
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: AKAI, Model: LEA-19V07P.
Shortly from the TV: LCD, 720p HD, diagonal 19 "(48 cm), there is HDMI, there is USB, backlight type: Edge LED.
The composition includes MainBoard T.MS6M181.7A 11453 and an LCD panel (matrix) M185B3-LC1, or LM185WH2 (TL) (A1).
Power supply unit external Adapter 12V.
AKAI LEA-19V07P TV with a M185B3-LC1 LCD display, 19 "(48 cm) diagonal size in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. This model uses Edge LED lateral LED illumination. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic about processing 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 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, audio x2, component, SCART, RGB, 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 30 watts.
Overall dimensions: 460x340x160 mm.
TV Weight: 3.5 kg.
Attention! The M185B3-LC1 panel of the AKAI LEA-19V07P 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.