Technical description and composition of the ASANO 40LF1010T TV, panel type and modules used. The composition of the modules.ASANO LED
Model: 40LF1010T
Chassis / Version: TP.MS3663S.PB801
Panel: V400HJ6-PE1 REV.C3
LED backlight: D0J.D390.10002.B01 CY-39D-3 * 10-300MA-30V
LED driver (backlight): integrated into MainBoard
PWM LED driver: SO-8
MOSFET LED driver: TO-252
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: TO-252
MainBoard: TP.MS3663S.PB801
IC MainBoard: SPI Flash: MX25L6405 ASANO 40LF1010T Mine: TP.MS3663S.PB801
Tuner: CDT-9NT372-RF01 & SAT
Specifications 40LF1010T
ASANO 40LF1010T
General recommendations for TV LCD LED repair
Possible manifestations of defects
- ASANO 40LF1010T does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.
A malfunction in such cases should be looked for first of all in the circuit of a switching power supply (SMPS) - a converter (AC / DC) of the mains voltage, which is combined with the main board MainBoard TP.MS3663S.PB801 in this model. Its output voltages should be measured and, in their absence, the power switches (TO-252) and rectifier diodes should be checked for the probability of a short circuit in the converters.
In the event of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor in the source of the key usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) PWM SOT23-6, in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or open circuit), sometimes in the violation of the contact connections of the LED strips.
To test the LED strips, in order to open all the transitions of the LEDs, several tens of volts or more are needed; it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED junctions in forward bias, you can sometimes detect the presence of a protective zener diode PN junction by connecting the probes in the opposite direction. If the zener diode is cut off or broken in K / Z, then the LED is faulty and requires replacement.
- The TV does not turn on, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the TP.MS3663S.PB801 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Repair of the board and replacement of microcircuits SPI Flash: MX25L6405 ASANO 40LF1010T Mine: TP.MS3663S.PB801 are made if the necessary equipment and the corresponding element base are available. Malfunctions associated with the use of BGA soldering technologies can be localized by warming up.
If there is no tuning to terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the outputs of the CDT-9NT372-RF01 & SAT tuner match. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.
Users and owners of TVs should remember that attempts to self-repair the ASANO 40LF1010T TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
The appearance of MainBoard TP.MS3663S.PB801 is shown in the figure below:TP.MS3663S.PB801
Main features of the ASANO 40LF1010T device:
Installed matrix (LED panel) V400HJ6-PE1 REV.C3.
To power the backlight LEDs, a converter combined with the TP.MS3663S.PB801 main board is used, controlled by the SO-8 PWM controller. TO-252 switches are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using PWM SOT23-6 microcircuits and TO-252 power switches.
MainBoard - the main board (motherboard) is a TP.MS3663S.PB801 module, using SPI Flash chips: MX25L6405 ASANO 40LF1010T Mine: TP.MS3663S.PB801 and others.
The CDT-9NT372-RF01 & SAT tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: INNOLUX
Model: V400HJ6-PE1 Rev.C2
Type: a-Si TFT-LCD, CELL
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 878.112x485.352 mm
Surface: Antiglare (Haze 1%)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.0% (with Polarizer)
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
ASANO 40LF1010T LCD TV with 39.5 "(100 cm) diagonal 16: 9 format. The required screen brightness of 280 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum, is 5000: 1. V The technology of manufacturing the screen of this TV model is realized with LED backlighting.
There is a convenient function for recording TV programs on a USB-drive with subsequent viewing at another time (TimeShift).
The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution at 1080p (Full HD). Supported media file formats: MP3, MKV, JPEG.
Speaker power 14 W (2x7 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI 1.4 x3, USB x2. A headphone output is provided.
The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 903x553x180 mm, without stand 903x516x84 mm.
TV weight: with stand: 6.5 kg, without stand: 6.2 kg.
Attention! The panel of the ASANO 40LF1010T LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV non-repairable.