Technical description and composition of the AKAI LEA-19L14G TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-19L14G
Panel: V185B1-LE1 M
T-CON: M185B3-L01-X + C
LED driver (backlight): integrated into PSU
PWM LED driver: OB335OCP
MOSFET LED driver: ME25N06
Power Supply (PSU): AY036D-1SF10
PWM Power: PWM SOT23-6 (LQP 36R)
MainBoard: AS-MST6M182VG-LE2
IC MainBoard: EN25Q32B, YD1517P
Tuner: ET-6N1E-CF101R
Technical Specifications LEA-19L14G
AKAI LEA-19L14G
General repair guidelines for TV LCD LED
TV AKAI LEA-19L14G, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Often, by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In cases where the AKAI LEA-19L14G TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the AYO36D-1SF10 power supply module is most likely faulty or there is no processor power on the motherboard (a typical defect of some AKAI TVs). It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If the AKAI LEA-19L14G TV does not have an image, but there is sound, a malfunction in the LED backlight circuits of the V185B1-LE1-M panel is likely. It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
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.
If the motherboard AS-MST6M182VG-LE2 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
Board repair and replacement of chips EN25Q32B, YD1517P, Tuner: ET-6N1E-CF101R are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner ET-6N1E-CF101R may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
Attention to the owners! Attempts to independently repair the AKAI LEA-19L14G TV are not recommended by the manufacturer and can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-19L14G , Main: AS-MST6M182VG-LE2, Panel: V185B1-LE1 M
The appearance of the MainBoard is shown in the figure below:
AS-MST6M182VG-LE2
AS-MST6M182VG-LE2 can be used in TVs:
AKAI LEA-19L14G (Panel V185B1-LE1 M), ROLSEN RL-22L1005UF (Panel 22 ").
The appearance of the power supply
Key Features of the AKAI LEA-19L14G:
Installed matrix (LED-panel) V185B1-LE1 M.
The matrix control uses the Timing Controller (T-CON) M185B3-L01-X + C.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OB335OCP PWM controller. As power elements of the LED driver, keys of the type ME25N06 are used.
The necessary supply voltages for all nodes of the AKAI LEA-19L14G TV are generated by the AY036D-1SF10 power supply module or its analogs using PWM SOT23-6 (LQP 36R) microcircuits.
MainBoard - the main board (motherboard) is an AS-MST6M182VG-LE2 module, using chips EN25Q32B, YD1517P and others.
The ET-6N1E-CF101R tuner provides television reception and channel tuning.
Information from an alternative source:
AKAI LEA-19L14G
Panel Type (Matrix): V185B1-LE1-M
Motherboard: AS-MST6M182VG-LE2, EN25Q32B, YD1517P, Tuner: ET-6N1E-CF101R
T-con: M185B3-L01-X + C (not removable)
PSU & Invertor: AYO36D-1SF10, LQP 36R (SOT23-6 Enclosure), OB335OCP, ME25N06
Additional technical information about the panel:
Brand: CMO
Model: V185B1-LE1
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 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 13S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: AKAI, Model: LEA-19L14G.
Briefly from the TV: LCD, LED backlight, 19 ", 1366x768, 720p HD, sound: 6 watts.
The composition uses MainBoard AS-MST6M182VG-LE2 and the LCD panel (matrix) V185B1-LE1 M.
Power Supply Unit (PSU) AY036D-1SF10 Power Supply.
AKAI LEA-19L14G TV with V185B1-LE1 LCD, 19 "(48 cm) diagonal size of 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 25 watts.
Overall dimensions: With stand 460x337x156 mm, Without stand 460x300x48 mm.
TV mass: 2.98 kg.
Attention! The V185B1-LE1 M panel of the AKAI LEA-19L14G 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.