Saturday, 4 April 2020

REPAIR / SERVICING TV AIWA 19LE3010

Technical description and composition of the TV AIWA 19LE3010, type of panel and applicable modules. The composition of the modules.
AIWA LED
Model: 19LE3010
Chassis / Version: T.MS6M181.13B
Panel: HT185WX1-300
LED driver (backlight): KLD + L013E04-01
PWM LED driver: OZ9998ACN
MOSFET LED driver: ME15N10-G
Power Supply (PSU): KPS-L036C1-01
PWM Power: FSQ0465R
MainBoard: T.MS6M181.13B
IC MainBoard: CPU: MST6E181VS-LF-Z1, SPI FLASH: GD25Q32
Tuner: AFT7 / W130G
Specifications 19LE3010
AIWA 19LE3010
General repair guidelines for TV LCD LED
Possible malfunctions
- AIWA 19LE3010 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Typically, with such manifestations, the defect is caused by faulty elements in the KPS-L036C1-01 main power module. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches and rectifier diodes of the converters for a probable short circuit.
In the event of breakdowns 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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) FSQ0465R, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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 such cases, the most likely malfunction of the LED backlight elements. 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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MST6E181VS-LF-Z1, SPI FLASH: GD25Q32 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
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.
We recommend the owners of the 19LE3010 TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!


SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    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 19LE3010:
Installed matrix (LED panel) HT185WX1-300.
To power the backlight LEDs, the KLD + L013E04-01 LED driver is used, it is controlled by the OZ9998ACN PWM controller. As power elements of the LED driver, keys of the type ME15N10-G are used.
The necessary supply voltages for all nodes of the AIWA 19LE3010 TV 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: BOE
Model: HT185WX1-300
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 (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 10S4P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
 Trademark: AIWA, Model: 19LE3010.
Short from TV: LCD, LED backlight, 19 ", 1366x768, 720p HD, sound: 4 watts.
The composition uses MainBoard T.MS6M181.13B and LCD-panel HT185WX1-300.
Power Supply Unit (PSU) KPS-L036C1-01 Power Supply.
Technical description
AIWA 19LE3010 TV with an HT185WX1-300 LCD display, 19 "(48 cm) diagonal size in 16: 9 format. The required screen brightness of 250 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 HT185WX1-300 panel and the T.MS6M181.13B motherboard software provide high-definition HD viewing at 1366x768 pixels in the 720p (HD Ready) graphic decomposition standard. 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 32 watts.
Overall dimensions: 474x350x210 mm.
Mass of the TV: 3.2 kg.
Attention! The HT185WX1-300 panel of an AIWA 19LE3010 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.