Wednesday 8 April 2020

REPAIR / SERVICING TV AIWA 24LE3110

Technical description and composition of the TV AIWA 24LE3110, type of panel and applicable modules. The composition of the modules.
AIWA LED
Model: 24LE3110
Chassis / Version: T.MS6M181.13B
Panel: V236H1-LE4
LED backlight: EDGE LED
LED driver (backlight): KLD-L012E08-01 REV-01
PWM LED driver: OZ9998AGN
Power Supply (PSU): KPS-L036C1-01 P / N 35014790
PWM Power: FSQ0465R
MainBoard: T.MS6M181.13B
IC MainBoard: CPU: MST6E181VS-LF-Z1, SPI FLASH: GD25Q32
Tuner: AFT7 / W130G
Specifications 24LE3110
AIWA 24LE3110
General repair guidelines for TV LCD LED
Possible malfunctions
- AIWA 24LE3110 TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
In some of these cases, a malfunction is detected in the KPS-L036C1-01 power module. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. FSM0465R PWM controllers, in the absence of visible damage or frank fault between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn 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.MS6M181.13B 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - CPU: MST6E181VS-LF-Z1, SPI FLASH: GD25Q32. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
If the TV works normally from external devices, but does not tune into television channels, the AFT7 / W130G tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention to users! Self-repair of the TV AIWA 24LE3110 without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!

FIRMWARE FOR SPI FLASH  ----------->   AIWA 24LE3110, Main: T.MS6M181.13B, Panel: V236H1-LE4

SCHEMATIC DIAGRAM  / PSU   ------------------>    KPS-L036C1-01 Power supply


 The appearance of MainBoard T.MS6M181.13B is shown in the figure below:
T.MS6M181.13B
T.MS6M181.13B can be used in TVs:
AIWA 22LE3110 (Panel HT215F01-100), AIWA 24LE3110 (Panel V236H1-LE4), AIWA 19LE3010 (Panel 1366x768 720p HD Edge LED).
The appearance of the power supply
Key Features of AIWA 24LE3110:
Installed matrix (LED-panel) V236H1-LE4.
The LED driver KLD-L012E08-01 is used to power the backlight LEDs, it is controlled by the OZ9998AGN PWM controller.
The necessary supply voltages for all nodes of the TV AIWA 24LE3110 are generated by the KPS-L036C1-01 power module or its analogs using FSQ0465R microcircuits.
MainBoard - the main board (motherboard) is a T.MS6M181.13B module, using CPU chips: MST6E181VS-LF-Z1, SPI FLASH: GD25Q32 and others.
The AFT7 / W130G tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V236H1-LE4
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%)
Brightness: 280 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S8P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V

 Trademark: AIWA, Model: 24LE3110.
Short from TV: LCD, LED backlight, 24 ", 1920x1080, 1080p Full HD, sound: 4 watts.
The composition uses MainBoard T.MS6M181.13B and an LCD panel (matrix) V236H1-LE4.
Power Supply Unit (PSU) KPS-L036C1-01 P / N 35014790 Power Supply.
AIWA 24LE3110 TV with V236H1-LE4 LCD, 24 "(61 cm) diagonal size of 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 20,000: 1 is achieved by special control of the LEDs. V This model uses side lighting from Edge LEDs.
The V236H1-LE4 panel and the T.MS6M181.13B motherboard software provide for watching programs and movies in high quality HD with a resolution of 1920x1080 pixels in a graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
Supported media file formats: MP3, MPEG4, JPEG.
The power of the sound system 4 W (2x2 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. 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 38 watts.
Overall dimensions: 587x415x209 mm.
TV Weight: 4 kg.
Attention! The V236H1-LE4 panel of the AIWA 24LE3110 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.