Technical description and composition of the AKAI LTA-32C904 TV, panel type and applicable modules. The composition of the modules.AKAI
Model: LTA-32C904
Panel: V320B1-L04 Rev. C1
Inverter (backlight): I320B1-16A
PWM Inverter: OZ964GN (20), AS324M-E1 (14)
MOSFET Inverter: AO4614 (8)
Trans Inverter: 4012L 065253 KG-2
Power Supply (PSU): FSP205-5E01 3BS0142514GP Rev: 1.4
PWM Power: TEA1532A (PWM 8pin), UCC28051 (PFC), L6599D (PWM Resonant)
MOSFET Power: 112N50C3 (PFC), K3568
MainBoard: JUG7.820.015 Ver2.0
IC MainBoard: SVP CX32 7332-LF, ANX9011L, STV8217, TDA8944J
Tuner: SEV-6GPL22-00
Control: IR: JUG7.820.016, Remote: GK23J2-C5
Technical Specifications LTA-32C904
AKAI LTA-32C904
General recommendations for repairing TV LCD
Possible malfunctions
- AKAI LTA-32C904 does not turn on at all and does not show any signs of operability. Does not blink indicators and does not respond to control buttons.
In most of these cases, the FSP205-5E01 main switching power supply is faulty. It is necessary to measure its secondary output voltages, and if they are absent, check the health of the power switches (112N50C3 (PFC), K3568) of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a 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, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip TEA1532A (PWM 8pin), UCC28051 (PFC), L6599D (PWM Resonant) 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, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should 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 indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the JUG7.820.015 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). Board repair and replacement of SVP CX32 7332-LF, ANX9011L, STV8217 .TDA8944J microcircuits are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
The malfunction of the CEV-6GPL22-00 tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Attention to users! Self-repair of the AKAI LTA-32C904 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!AKAI LTA-32C904 Chassis LS01
Panel: V320B1-L04
Tuner: CDT-6GPL22-00
MAIN: JUG7.820.015 VER2.0
Main Composition: T5BS4 - 9999, 39VF040, 24C64
T-CON: V320B1-C03
INVERTER: 27-D008101, PSU: FSP205-5E01
The appearance of the MainBoard JUG7.820.015 is shown in the figure below:JUG7.820.015
JUG7.820.015 can be used on TVs:
AKAI LTA-32C904 (Panel V320B1-L04 Rev. C1), AKIRA LCT-26CH01ST / R (Panel V270B1-L03 Rev. C1).
The appearance of the power supply
Key Features of the AKAI LTA-32C904:
Installed matrix (LCD panel) V320B1-L04 Rev. C1.
To power the backlight, an inverter I320B1-16A is used, it is controlled by the PWM controller OZ964GN (20), AS324M-E1 (14). A transformer 4012L 065253 KG-2 is installed in the inverter converter. As power elements of the inverter, keys of the type AO4614 (8) are used.
The required supply voltages for all nodes of the AKAI LTA-32C904 TV are generated by the FSP205-5E01 power supply module or its analogs using TEA1532A (PWM 8pin), UCC28051 (PFC), L6599D (PWM Resonant) microcircuits and 112N50C3 (PFC) type power switches, K3568.
MainBoard - the main board (motherboard) is a JUG7.820.015 module, using SVP CX32 7332-LF, ANX9011L, STV8217, TDA8944J and others.
The tuner SEV-6GPL22-00 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V320B1-L04
Type: a-Si TFT-LCD, Panel
Diagonal size: 32.0 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 708.954x398.592 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 75%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: AKAI, Model: LTA-32C904.
Shortly from the TV: LCD, 720p HD, diagonal 32 "(81 cm), there is HDMI.
The composition uses MainBoard JUG7.820.265 Ver1.00 and the LCD panel (matrix) V320B1-L06.
Power Supply Unit (PSU) JSK4200-014 - 810039684 - 47131.220.0.0116105 Rev1.4 Power Supply.
AKAI LTA-32C904 TV with V320B1-L06 LCD, 32 "(81 cm) diagonal size in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Maximum brightness to minimum ratio (contrast) ) is 1200: 1. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard for 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 in standard max 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound system 10 W (2x5 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI. 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.
Overall dimensions: With stand 820x620x250 mm, Without stand 820x560x110 mm.
Attention! The AKAI LTA-32C904 LCD TV panel V320B1-L06 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
