Technical description and composition of the AKAI LTA-15E304 TV, panel type and applicable modules. The composition of the modules.AKAI
Model: LTA-15E304
Chassis / Version: MST718BE
Panel: SVA150XG04TB
Inverter (backlight): IVSN15203 Rev: A1
PWM Inverter: BIT3193G
MOSFET Inverter: FDS8958A
Power Supply (PSU): Adapter
MainBoard: MST718BE GBIP7.820.3283-1 A (SJL10V1.1)
IC MainBoard: MST718BE TDA9886 STV82X7-80 NC / PT2314 TDA1517P
Tuner: F07WP-3BER-E
Technical Specifications LTA-15E304
AKAI LTA-15E304
General recommendations for repairing TV LCD
Repair of the AKAI LTA-15E304 TV should begin with a careful external examination of all its components and modules. Often, by the visible signs of a change in the state of some elements, one can judge the causes of the defect. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
In the case when the LTA-15E304 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink light bulbs and does not show any signs of operability, the Adapter power module is probably faulty in this case. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
A breakdown of the power switch of the pulse converter is often triggered by other elements, for example, in the stabilization or control circuits of this switch, as well as by the damper elements in its drain and TPI winding.
Sometimes the AKAI LTA-15E304 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit). It is necessary to take into account that in cases of inverter protection shutdown (in order to be able to diagnose) there is a risk of failure of the inverter power elements and take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
The MAIN_PCB motherboard should be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. In some cases, it is necessary to check or replace (if necessary) the elements of the MainBoard board - W78E65P-40, ISSI435416-3G, SAA5264PS / M3 / 0104, MST518V-LF, TVP5146M1, AN17820B, MSP3415G. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
Before changing the tuner JS-6B2 / 121A25HS, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on 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
Once again, remind users! Attempts to self-repair a TV AKAI LTA-15E304 without the appropriate qualifications and experience can lead to its complete non-repairability!
The appearance of the MainBoard MST718BE is shown in the figure below:MST718BE
MST718BE can be used in TVs:
AKAI LTA-15E304 (Panel SVA150XG04TB), SUPRA STV-LC1503 (Panel 15 inches).
Key Features of the AKAI LTA-15E304:
Installed matrix (LCD panel) SVA150XG04TB.
To power the backlight, an IVSN15203 inverter is used, controlled by a BIT3193G PWM controller. As power elements of the inverter, keys of the FDS8958A type are used.
To power all internal components of the AKAI LTA-15E304 TV, an external adapter type source is used.
MainBoard - the main board (motherboard) is an MST718BE module, using the MST718BE TDA9886 STV82X7-80 NC / PT2314 TDA1517P chips and others.
The F07WP-3BER-E tuner provides TV reception and channel tuning.
Information from an alternative source:
AKAI LTA-15E304
Panel Type (Matrix): SVA150XG04TB,
Motherboard :, W78E65P-40, ISSI435416-3G, SAA5264PS / M3 / 0104, MST518V-LF, TVP5146M1, AN17820B, TUNER: GBIP7. 3199-1 050526, MSP3415G BB V3, Tuner: JS-6B2 / 121A25HS
Invertor: IVSN15203 Rev: A1, BIT3193G, FDS8958A,,
Additional technical information about the panel:
Brand: SVA-NEC
Model: SVA150XG04TB
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.128x228.096 mm
Brightness: 250 cd / m²
Contrast Ratio: 450: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 60%
Response Time: 3/9 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V
Brand: AKAI, Model: LTA-15E304.
Short from TV: LCD, 15 ", 1024x768, sound: 6 watts.
The composition uses MainBoard MST718BE GBIP7.820.3283-1 A (SJL10V1.1) and LCD panel (matrix) SVA150XG04TB.
Power Supply External Adapter.
AKAI LTA-15E304 TV with SVA150XG04TB LCD, 15 "diagonal size, 4: 3 format. The brightness of the screen is 330 cd / m² with CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 450: 1. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC.
The power of the acoustic system of sound 6 W (2x3W) 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, SCART, RGB, VGA.
Overall dimensions: With stand 820x620x250 mm, Without stand 820x560x110 mm.
Attention! The SVA150XG04TB panel of the AKAI LTA-15E304 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!