Technical description and composition of the AKAI LES-22V02S TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LES-22V02S
Chassis / Version: T.MS608.61
Panel: M215HGE-P02
LED backlight: EDGE LED
T-CON: M215HGE-L21-X + C
Power Supply (PSU): Adapter 12V
MainBoard: T.MS608.61
IC MainBoard: NAND: SD1N7DP2-4G, SPI Flash: 25Q16, Audio: YD1517P
Tuner: R620D2
Technical Specifications LES-22V02S
AKAI LES-22V02S
General repair guidelines for TV LCD LED
Possible manifestations of defects
- AKAI LES-22V02S does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
With such manifestations, a malfunction is most likely to be detected in the Adapter power module.
The external adapter 12V power supply is not always subject to repair, especially since the owner can purchase it independently. But, in some cases, it makes sense to open it and eliminate the simple typical defects inherent in converters in pulsed sources. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches and rectifier diodes for a probable short circuit.
In the event of a breakdown 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.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately 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.
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
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the T.MS608.61 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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its NAND chips: SD1N7DP2-4G, SPI Flash: 25Q16, Audio: YD1517P and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner R620D2, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages that must be measured at 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
Owners and users of the AKAI LES-22V02S 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!
Repair MainBoard
The appearance of MainBoard T.MS608.61 is shown in the figure below:
T.MS608.61
Key features of the AKAI LES-22V02S device:
Installed matrix (LED-panel) M215HGE-P02.
The matrix control uses the Timing Controller (T-CON) M215HGE-L21-X + C.
To power all internal components of the AKAI LES-22V02S TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is a T.MS608.61 module, using NAND chips: SD1N7DP2-4G, SPI Flash: 25Q16, Audio: YD1517P and others.
The R620D2 tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: M215HGE-P02
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Transmissivity: 6.3% (with Polarizer)
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
Trademark: AKAI, Model: LES-22V02S.
Short from TV: LCD, LED backlight, 22 ", 1920x1080, 1080p Full HD, sound: 6 W, Internet access, Wi-Fi, Smart TV.
The composition uses MainBoard T.MS608.61 and LCD-panel M215HGE-P02.
Power supply unit external Adapter 12V.
AKAI LES-22V02S TV with an M215HGE-P02 LCD display, diagonal size 22 "(56 cm) in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlight LED. The ratio of maximum brightness to minimum (contrast) is 1000 : 1. The LED display technology is implemented in the model’s display manufacturing technology.The design and technical capabilities of the TV provide for watching broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD).
LES-22V02S is equipped with SMART software and the ability to work on the Internet. Connecting to a network can be done via Wi-Fi. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, 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, VGA, HDMI, USB x2, Ethernet (RJ-45), Wi-Fi. 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, 1280x1024, 1360x768.
Overall dimensions: With a support of 509x350x175 mm, Without a support of 509x304x44 mm.
Mass of the TV: 3 kg.
Attention! The M215HGE-P02 panel of the AKAI LES-22V02S 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.