Technical description and composition of the AKAI LTA-32L09P TV, panel type and applicable modules. The composition of the modules.AKAI
Model: LTA-32L09P
Panel: LTA320AP05
Inverter (backlight): SSI320_4UA01
PWM Inverter: OZ9966SN
MOSFET Inverter: STU432S, KMB054N40DB
Trans Inverter: LT-U3208
Power Supply (PSU): MP116A REV1.0
PWM Power: NCP1606, L6599, OB2263
MainBoard: T.MS6M181.6A 11253
IC MainBoard: CPU: MST6E181VS-LF-Z1; SPI Flash: W25Q32
Tuner: CDT-3SP5F3-36
Technical Specifications LTA-32L09P
AKAI LTA-32L09P
General recommendations for repairing TV LCD
Possible malfunctions
- The AKAI LTA-32L09P TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
With such manifestations, a malfunction is most likely to be detected in the MP116A power supply module. It is necessary to measure the secondary 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 of diodes in the secondary circuits, the converter can operate in emergency short circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM microcircuit (PWM) NCP1606, L6599, OB2263 can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after their completion, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the T.MS6M181.6A 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 attempts to repair the MB board (SSB), it is necessary to check the health of its elements - CPU: MST6E181VS-LF-Z1; SPI Flash: W25Q32 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).
Before replacing the tuner CDT-3SP5F3-36, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
We recommend the owners of the LTA-32L09P 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!
The appearance of MainBoard T.MS6M181.6A is shown in the figure below:Repairing the motherboard T.MS6M181.6A, which uses the multifunctional processor MST6M181VS combined with a scaler, is advisable to start by checking the power supply of the standby mode, which is implemented using a separate linear stabilizer 3.3V. Further, in the operating mode, it is necessary to check the operability of linear stabilizers or voltage converters necessary to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. A voltage of 2.5V is required to power the DDR W9425G6JH memory. If there is a backlight and no image, the power of the LCD panel 5V or 12V, depending on the type of panel used, it is advisable to measure directly on the LVDS connector. If the TV does not exit Stand-by, does not respond to the remote control and control buttons, update the SPI FLASH software.
T.MS6M181.6A can be used in TVs:
AKAI LTA-32L09P (Panel LTA320AP05), ERISSON 32LEN60 (Panel LTA320AN01 D02 ), ERISSON 32LEE01 (Panel 720p HD 1366x768), HAIER LE32Z50 (Panel T315XW06 V5), Hyundai H-LED32V6 (Panel HV320WXC-100), HYUNDAI H-LEDVD32V6 (Panel V320BJ2-P01), HYUNDAI H-LED32V16 (Panel CX315LEDM).
The appearance of the power supply
Key Features of the AKAI LTA-32L09P:
Installed matrix (LCD-panel) LTA320AP05.
To power the backlight, an SSI320_4UA01 inverter is used, controlled by the OZ9966SN PWM controller. A transformer LT-U3208 is installed in the inverter converter. As power elements of the inverter, keys of the STU432S, KMB054N40DB type are used.
The necessary supply voltages for all nodes of the TV AKAI LTA-32L09P are generated by the MP116A power module, or its analogs using NCP1606, L6599, OB2263 microcircuits.
MainBoard - the main board (motherboard) is a module T.MS6M181.6A, using CPU chips: MST6E181VS-LF-Z1; SPI Flash: W25Q32 and others.
Tuner CDT-3SP5F3-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AP05-107
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.25 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 20 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Brand: AKAI, Model: LTA-32L09P.
Shortly from the TV: LCD, 32 ", 1366x768, 720p HD, sound: 12 W, HDMI connectors: 3.
The composition uses MainBoard T.MS6M181.6A 11253 and an LCD panel (matrix) LTA320AP05.
Power Supply Unit (PSU) MP116A REV1.0 Power Supply.
AKAI LTA-32L09P TV with a 32 "(81 cm) diagonal LCD display, 32: 9 format. LCD screen brightness of 350 cd / m² is ensured by backlighting with CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 1200: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standard tach 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, Xvid, DivX, MKV, JPEG.
The power of the sound system 12 W (2x6 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 x2, audio x2, component, SCART, VGA, HDMI x3, 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 120 watts.
Overall dimensions: With stand 790x560x190 mm, Without stand 790x505x100 mm.
The mass of the TV: 12.2 kg.
Attention! The LTA320AP05 panel of the AKAI LTA-32L09P LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!