Technical description and composition of the AIWA 20LE7010 TV, panel type and applicable modules. The composition of the modules.AIWA LED
Model: 20LE7010
Chassis / Version: V1N04
Panel: HK195WLEDM-CH05H (M195FGE-P03)
LED driver (backlight): integrated into MainBoard
PWM LED driver: BIT3250 (BIT3260)
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: 7N65AZ
MainBoard: CV59L-A23
IC MainBoard: CPU: TSUMV59XU-Z1, SPI Flash: 25Q32
Tuner: CDT-3N55I1-10
Specifications 20LE7010
AIWA 20LE7010
General repair guidelines for TV LCD LED
Possible manifestations of defects
- AIWA 20LE7010 does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
The malfunction in such cases should be sought in the elements of the power source - the AC / DC converter, which is located on the MainBoard CV59L-A23 main board. It is necessary to measure its output voltages, and if they are absent, check the operability of the power switches (7N65AZ) of the converters and rectifier diodes for a short circuit probability.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke the excess of maximum current or voltage values. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) PWM SOT23-6, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
As a rule, in such cases there is no display 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 is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- 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 CV59L-A23 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: TSUMV59XU-Z1, SPI Flash: 25Q32 and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally from external devices, but does not tune into television channels, the tuner CDT-3N55I1-10 may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Once again, remind users! Attempts to self-repair the TV AIWA 20LE7010 without the appropriate qualifications and the necessary experience can lead to its complete failure to repair!
FIRMWARE FOR SPI FLASH -----------> AIWA 20LE7010 V1N04, Main: CV59L-A23, Panel: HK195WLEDM-CH05H (M195FGE-P03).
20LE7010 - Version V1P12, Panel: HK195WLEDM-CH46H, T-Con: M195FGE-L20 C1-D, MainBoard: TP.VST59.PA502, LED Backlight: SJ.HK.E1950904-4014DS-M (M195FGE-P03), IR & Button Board: LEDTV-22D-T7-IR+KEY-V3.0.
FIRMWARE FOR SPI FLASH -----------> AIWA 20LE7010 V1N08, Main: TP.VST59.PA502, Panel: M195FGE-P03
The appearance of the MainBoard CV59L-A23 is shown in the figure below:CV59L-A23
CV59L-A23 can be used in TVs:
AIWA 20LE7011 (Panel M195FGE-P03 HK195WLEDM-CH05H), AIWA 20LE7010 (Panel HK195WLEDM-CH05H (M195FGE-P03)), Elenberg 22AH4010 (Panel HK215WLEDM-DH19H).
Key Features of AIWA 20LE7010:
Installed matrix (LED panel) HK195WLEDM-CH05H (M195FGE-P03).
To power the backlight LEDs, a converter is used, combined with the CV59L-A23 main board, controlled by the BIT3250 PWM controller (BIT3260).
The power module is combined with the MainBoard and is made according to the scheme of a flyback AC / DC voltage converter using PWM SOT23-6 microcircuits and power switches of the 7N65AZ type.
MainBoard - the main board (motherboard) is a CV59L-A23 module, using CPU chips: TSUMV59XU-Z1, SPI Flash: 25Q32 and others.
The tuner CDT-3N55I1-10 provides the reception of television programs and tuning to channels.
Trademark: AIWA, Model: 20LE7010.
Briefly from the TV: LCD, LED backlight, 20 ", 1366x768, 720p HD, sound: 6 watts.
The composition includes MainBoard CV59L-A23 and LCD panel (matrix) HK195WLEDM-CH05H (M195FGE-P03). The power supply is combined with the MainBoard.
AIWA 20LE7010 TV with HK195WLEDM-CH05H LCD, 20 "(51 cm) diagonal size, 16: 9 format. The required screen brightness of 220 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of the LEDs. V This model uses side lighting from Edge LEDs.
The HK195WLEDM-CH05H (M195FGE-P03) panel and the CV59L-A23 motherboard software provide high-quality HD viewing at 1366x768 pixels in the 720p (HD Ready) graphic decomposition standard. The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound system 6 W (2x3 W) 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, VGA, HDMI, 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, 1360x768.
Overall dimensions: 457x342x139 mm.
Mass of the TV: 2.4 kg.
Attention! The HK195WLEDM-CH05H (M195FGE-P03) panel of an AIWA 20LE7010 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.
