Thursday 9 April 2020

REPAIR / SERVICING TV AIWA 24LE6110

Technical description and composition of the TV AIWA 24LE6110, type of panel and applicable modules. The composition of the modules.
AIWA LED
Model: 24LE6110
Chassis / Version: V1L09
Panel: V236H1-LE4 Rev. C1 // HM236WU3-100
LED backlight: EDGE LED
LED driver (backlight): OB3362HP
PWM LED driver: ME15N10-6
Power Supply (PSU): 168P-P24EQB-W2 (5800-P24EQB-WP10)
PWM Power: PWM SOT23-6 OB2273
MainBoard: 5800-A8M280-0P10
IC MainBoard: CPU: MST6E182VG-LF-Z1, SPI Flash: 25Q32; Audio: YD1517
Tuner: ET-9Z2E-CF106H
Control: Service Mode: SOURCE 3195
Specifications 24LE6110
AIWA 24LE6110
General repair guidelines for TV LCD LED
Possible malfunctions
- AIWA 24LE6110 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In some of these cases, a fault is detected in the 168P-P24EQB-W2 power supply module. It is necessary to measure its output supply voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in PN semiconductor junctions.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power 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, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM chips PWM SOT23-6 OB2273 are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. 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.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 5800-A8M280-0P10 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CPU: MST6E182VG-LF-Z1, SPI Flash: 25Q32 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
If you suspect a malfunction of the ET-9Z2E-CF106H tuner, first of all, you need to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
It should be remembered! Attempts to independently repair the TV AIWA 24LE6110, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!


FIRMWARE FOR SPI FLASH  ----------->   AIWA 24LE6110 V1L09, Main: 5800-A8M280-0P10, Panel: V236H1-LE4 or HM236WU3-100

FIRMWARE FOR SPI FLASH  ----------->   AIWA 24LE6110 V1L09, Main: 5800-A8M280-0P10 Ver10.00, Panel: V234H1-LE4 Rev.C1

type: AIWA 24LE6110 V1M02, Panel: HM236WU3-100, MainBoard: 5800-A8M280-0P10


 The appearance of the MainBoard 5800-A8M280-0P10 is shown in the figure below:
5800-A8M280-0P10
5800-A8M280-0P10 can be used in TVs:
AIWA 32LE6110 (Panel T320HVN01.V2), AIWA 24LE6110 (Panel V236H1-LE4 Rev.C1), HYUNDAI H-LED29V17 (Panel V290BJ1-PE1 VRev.C2), SUPRA STV-LC24660FL (Panel HM236WU3-100), SUPRA STV-LC19660WL (Panel E185SG01), SUPRA STV-LC19663WL (Panel E185SG02).
Key Features of AIWA 24LE6110:
Installed matrix (LED panel) V236H1-LE4 Rev. C1 or HM236WU3-100.
The LED driver OB3362HP is used to power the backlight LEDs, it is controlled by the ME15N10-6 PWM controller.
The necessary supply voltages for all nodes of the TV AIWA 24LE6110 are formed by the power supply module 168P-P24EQB-W2, or its analogs using PWM SOT23-6 OB2273 microcircuits.
MainBoard - the main board (motherboard) is a 5800-A8M280-0P10 module, using CPU chips: MST6E182VG-LF-Z1, SPI Flash: 25Q32; Audio: YD1517 and others.
The ET-9Z2E-CF106H tuner provides television 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: 24LE6110.
Briefly from the TV: LCD, LED backlight, 24 ", 1920x1080, 1080p Full HD, sound: 10W, HDMI connectors: 3.
The composition uses MainBoard 5800-A8M280-0P10 and the LCD panel (matrix) V236H1-LE4 Rev.C1, or HM236WU3-100.
Power Supply Unit (PSU) 168P-P24EQB-W2 (5800-P24EQB-WP10) Power Supply.
AIWA 24LE6110 TV with V236H1-LE4 LCD display, 24 "(61 cm) diagonal size in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs. This model uses side lighting from Edge LEDs.
The V236H1-LE4 Rev.C1 panel and the 5800-A8M280-0P10 motherboard software provide for watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition 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, MKV, JPEG.
The power of the sound system 10 W (2x5 W) provides 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, component, VGA, HDMI x3, USB x2. 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, 1920x1080.
The power consumed by the TV working in the network mode is 40 watts.
Overall dimensions: 700x440x130 mm.
TV Weight: 5.5 kg.
Attention! The V236H1-LE4 Rev.C1 panel of the AIWA 24LE6110 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.