AKIRA LED
Model: 32LED06T2P
Chassis / Version: CV512H-U42
Panel: VVH32L147G22LTY
LED backlight: CC02320D570V12 320L 32E9 7S1P
T-CON: CV315PW07S; HX8861-J, 4G16, 503Y
LED driver (backlight): integrated into PSU
PWM LED driver: PWM 8pin
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: CV512H-U42 CV512H-U42-11
IC MainBoard: SPI Flash: W25Q64
Tuner: CDT-9NT372
Control: IR: DLED320E9-IR
Specifications 32LED06T2P
AKIRA 32LED06T2P
General repair guidelines for TV LCD LED
Possible malfunctions
- AKIRA 32LED06T2P 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.
In this case, first of all, it is necessary to check the operability of the main power source - the AC / DC network voltage converter, all of whose elements are located on the MainBoard CV512H-U42 board. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
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.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) PWM SOT23-6, if they do not have visible damage to the case and open short circuit between the terminals, are usually 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 most likely in these cases is a malfunction of the LED backlight. 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 should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the CV512H-U42 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 complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its SPI Flash chips: W24Q64 and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If you suspect a malfunction of the CDT-9NT372 tuner, first of all, you need to verify the correctness of the software, as well as the presence of the required voltage levels and the data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
Attention to users! Self-repair of the AKIRA 32LED06T2P TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Repair MainBoard
The appearance of the MainBoard CultraView CV512H-U42 is shown in the figure below:
CV512H-U42
CV512H-U42 can be used in TVs:
DEXP H39D7000Q (Panel LC390TA2A), SUPRA STV-LC32LT0010W (Panel KM0320LDRH0037).
Key features of the AKIRA 32LED06T2P device:
Installed matrix (LED-panel) VVH32L147G22LTY.
The matrix control uses the Timing Controller (T-CON) CV315PW07S ;.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a PWM 8pin PWM controller.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is a CV512H-U42 module, using SPI Flash chips: W25Q64 and others.
Tuner CDT-9NT372 provides the reception of television programs and tuning to channels.
Brand: AKIRA, Model: 32LED06T2P.
Shortly from the TV: LCD, LED backlight, 31.5 ", 1366x768, 720p HD, DVR, sound: 20 W, HDMI connectors: 3.
Manufacturer: QUANT Plant Zelenograd (Moscow), Driveway No. 4801, Building 7 and TELEBALT Plant Kaliningrad, Kamskaya, 62.
Developer: TT International Ltd. Singapore.
The composition includes MainBoard CV512H-U42 CV512H-U42-11 and LCD-panel VVH32L147G22LTY. The power supply is combined with the MainBoard.
TV AKIRA 32LED06T2P with LCD VVH32L147G22LTY, diagonal size 31.5 "(80 cm) in 16: 9 format. The declared brightness of the screen is 220 cd / m² with modern LED backlight LED. The ratio of maximum brightness to minimum (contrast) is at least 1400: 1 The LED LCD backlight manufacturing technology of this TV uses LED LED backlighting. You can watch in high quality HD with a resolution of 1366x768 pixels in 720p standard (HD Ready). Supported media formats: MP3, MPEG4, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides 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, component, VGA, HDMI x3, USB x2. A headphone jack is provided. A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: with stand 735x469x208 mm, without stand 735x433x74 mm.
Attention! The VVH32L147G22LTY panel of the AKIRA 32LED06T2P 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.