Technical description and composition of the ERISSON 22LES76T2 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 22LES76T2
Chassis / Version: TP.MS3463S.PA63
Panel: ST2151B01-1-XC-3
LED driver (backlight): integrated into MainBoard
PWM LED driver: SN51DP
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MainBoard: TP.MS3463S.PA63
IC MainBoard: SPI FLASH: GD25Q64
Tuner: XF-3SDT-H
Technical Specifications 22LES76T2
ERISSON 22LES76T2
General repair guidelines for TV LCD LED
Possible malfunctions
- The ERISSON 22LES76T2 TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
In such cases, the AC / DC converter of the mains voltage, which is combined with the main board TP.MS3463S.PA63, is often faulty. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM SOT23-6 PWM controllers, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason can be both in the power 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 detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, 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 turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the TP.MS3463S.PA63 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). Board repair and replacement of chips SPI FLASH: GD25Q64 are made in the presence of 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.
If the TV works normally from external devices, but does not tune into television channels, the tuner XF-3SDT-H 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.
Owners and users of the ERISSON 22LES76T2 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> ERISSON 22LES76T2, Main: TP.MS3463S.PA63, Panel: ST2151B01-1-XC-3
The appearance of MainBoard TP.MS3463S.PA63 is shown in the figure below:TP.MS3463S.PA63
TP.MS3463S.PA63 can be used in TVs:
ERISSON 22LES76T2 (Panel ST2151B01-1-XC-3), SUPRA STV-LC19T550WL (Panel HM185WX3-401), SUPRA STV-LC22T550FL (Panel T215HVN01).
Main features of the ERISSON 22LES76T2 device:
Installed matrix (LED panel) ST2151B01-1-XC-3.
To power the backlight LEDs, a converter is used, combined with the TP.MS3463S.PA63 main board, controlled by the SN51DP 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 TP.MS3463S.PA63 module, using SPI FLASH chips: GD25Q64 and others.
The XF-3SDT-H tuner allows you to receive television programs and tune to channels.
Trademark: ERISSON, Model: 22LES76T2.
Shortly from the TV: LCD, 1080p Full HD, diagonal 22 "(56 cm), there is HDMI, there is USB, there is support for DVB-T2, the backlight type: Edge LED, there is a satellite tuner.
The composition uses MainBoard TP.MS3463S.PA63 and an LCD panel (matrix) ST2151B01-1-XC-3. Power supply combined with MainBoard
Technical description
ERISSON 22LES76T2 TV with an ST2151B01-1-XC-3 LCD display, diagonal size 22 "(56 cm) in 16: 9 format. The required screen brightness of 180 cd / m² is provided by LED backlighting. Contrast, as the ratio of maximum brightness to minimum , is 3000: 1. The LED-panel of this TV has end-face LED backlighting - Edge LED.The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD). Support My multimedia file formats are MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the acoustic system of sound 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, audio x2, component, SCART, VGA, HDMI, USB. An output for connecting headphones is provided.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
Overall dimensions: With a support 502x333x153 mm, Without a support 502x298x66 mm.
Attention! The ST2151B01-1-XC-3 panel of an ERISSON 22LES76T2 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.