Technical description and composition of the AKAI LEA-26V07P TV, panel type and applicable modules. The composition of the modules.AKAI LED
Model: LEA-26V07P
Chassis / Version: T.MS.18VG.81B
Panel: LC260EXN (SD) (A2)
LED driver (backlight): EDGE LED Driver 24V 1A 26W
MainBoard: T.MS.18VG.81B 11467
IC MainBoard: IT6633E-P, 25Q32FL, TPA3110D2
Tuner: CDT-3SP5I2-36
Technical Specifications LEA-26V07P
AKAI LEA-26V07P
General repair guidelines for TV LCD LED
Possible malfunctions
- AKAI LEA-26V07P 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 the vast majority of such cases, a malfunction is detected in the power module. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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. PWM IC_Power may 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
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 is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the T.MS.18VG.81B 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 needs to be replaced in case of complex faults that are difficult to detect. When trying to repair, you should check its elements - IT6633E-P, 25Q32FL, TPA3110D2 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.
The malfunction of the tuner CDT-3SP5I2-36 is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Once again, remind users! Attempts to self-repair a TV AKAI LEA-26V07P without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
FIRMWARE FOR SPI FLASH -----------> AKAI LEA-26V07P, Main: T.MS.18VG.81B 11467, Panel: LC260EXN (SD)(A2)
The appearance of MainBoard T.MS.18VG.81B is shown in the figure below:T.MS.18VG.81B
T.MS.18VG.81B can be used in TVs:
AKAI LEA-26V07P (Panel LC260EXN (SD)(A2)), BBK LEM2683F (Panel V260H1-LE1 REV.C6).
Key Features of the AKAI LEA-26V07P:
Installed matrix (LED-panel) LC260EXN (SD) (A2).
The LED driver EDGE is used to power the backlight LEDs.
The required supply voltage for all nodes of the TV AKAI LEA-26V07P provides a switching power supply.
MainBoard - the main board (motherboard) is a module T.MS.18VG.81B, using microchips IT6633E-P, 25Q32FL, TPA3110D2 and others.
The tuner CDT-3SP5I2-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC260EXN-SDA2
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6/9 (Tr / Td)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Brand: AKAI, Model: LEA-26V07P.
Briefly from the TV: LCD, LED backlight, 26 ", 1366x768, 720p HD, sound: 18W, HDMI connectors: 3.
The composition uses MainBoard T.MS.18VG.81B 11467 and an LCD panel (matrix) LC260EXN (SD) (A2).
AKAI LEA-26V07P TV with an LC260EXN LCD, 26 "(66 cm) diagonal size of 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. The ratio of maximum brightness to minimum (contrast) is 1000: 1 This model uses Edge LED side illumination. You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic about abotka and the formation of the digital signal is in 480i standards, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats:. MP3, WMA, DivX, MKV, JPEG.
The power of the speaker system of sound 18 W (2x9 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 x2, component, SCART, RGB, VGA, HDMI x3, 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, 1280x1024, 1360x768.
The power consumed by the TV working in the network mode is 65 watts.
Overall dimensions: With a support of 653x467x202 mm, Without a support of 653x413x44 mm.
The mass of the TV: 7.2 kg.
Attention! The AKAI LEA-26V07P LED TV panel LC260EXN (SD) (A2) 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.
