Technical description and composition of the ERISSON 32LES70T2 TV, panel type and applicable modules. The composition of the modules.ERISSON LED
Model: 32LES70T2
Chassis / Version: 5800-A6M31G-0P00
Panel: LC320DXJ (SF) (A2)
LED backlight: 5800-W32001-3P02
LED driver (backlight): integrated into MainBoard
PWM LED driver: MP3398A
MOSFET LED driver: D4286
Power Supply (PSU): integrated into MainBoard
PWM Power: LNK6778K
MainBoard: 5800-A6M31G-0P10 VER: 00.01 // 5800-A6M31G-0P00
IC MainBoard: SPI Flash: 25Q64CSIG, SOUND: TPA3113D2
Tuner: NoName
Control: IR: 5800-RUE300-0P00 Ver00.0
Specifications 32LES70
ERISSON 32LES70T2
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs ERISSON 32LES70T2, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. Many visible changes in the state of the elements make it possible to determine the future direction of the troubleshooting. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
In the absence of any signs of operability, when the ERISSON 32LES70T2 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is first necessary to check all the power semiconductor elements of the primary circuit - diodes and transistors for the possibility of an avalanche or thermal breakdown.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
If the ERISSON 32LES70T2 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the 720p HD, 1366x768 panel is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair or diagnostics of the 5800-A6M31G-0P00 motherboard should begin by checking the stabilizers or power converters of its microcircuits. If necessary, you should update 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 - Flash GD25Q64 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.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
FIRMWARE FOR SPI FLASH -----------> ERISSON 32LES70T2, Main: 5800-A6M31G-0P00, Panel: 720p HD, 1366x768
To reduce the backlight current, the total resistance of the resistors relative to the housing on the ISET pin of the MP3398A should be proportionally increased. ISET (current setting) - pin 8 in the SOIC-20 package or pin 6 in the SOIC-16 package.
Repair MainBoard
The appearance of the MainBoard 5800-A6M31G-0P10 is shown in the figure below:
5800-A6M31G-0P10
5800-A6M31G-0P10 can be used in TVs:
AIWA 32LE4020 (Panel LC320DXJ-SHA2 GDL320HY (LD0-008) Rev.00), AIWA 32LE7020 (Panel LC320DXJ (SH)(A2)), ERISSON 32LES71T2 (Panel LC320DXJ-SFA2), ERISSON 32LES70T2 (Panel LC320DXJ (SF)(A2)), SUPRA STV-LC32T650WL (Panel LC320DXJ-SFA2 RDL320HY(LD0-803)45).
Main features of the ERISSON 32LES70T2 device:
Installed matrix (LED-panel) LC320DXJ (SF) (A2).
To power the backlight LEDs, a converter is used, combined with the main board 5800-A6M31G-0P10, controlled by the MP3398A PWM controller. As the power elements of the LED driver, keys of the D4286 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using LNK6778K microcircuits.
MainBoard - the main board (motherboard) is a 5800-A6M31G-0P10 module, using SPI Flash chips: 25Q64CSIG, SOUND: TPA3113D2 and others.
The NoName tuner provides television reception and channel tuning.
Trademark: ERISSON, Model: 32LES70.
Briefly from the TV: LCD, 720p HD, diagonal 31.5 "(80 cm), HDMI: 3, USB: 2, there is support for DVB-T2, backlight type: Edge LED.
The composition includes MainBoard 5800-A6M31G-0P10 VER: 00.01, or 5800-A6M31G-0P00 and LCD panel (matrix) LC320DXJ (SF) (A2). The power supply is combined with the MainBoard.
ERISSON 32LES70 TV with LCD display LC320DXJ, diagonal size 31.5 "(80 cm) in 16: 9 format. The required brightness of the screen is 230 cd / m² LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 1200: 1. The LED panel of this TV is equipped with an end LED backlight - Edge LED. 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 Ax PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3, MPEG4, DivX, MKV, JPEG.
The power of the sound system 12 W (2x6 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, S-Video, SCART, VGA, HDMI x3, USB x2. 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.
The digital tuner is capable of receiving television channels in the standards DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2.
Overall dimensions: 735x466x165 mm.
TV Weight: 4.5 kg.
Attention! The LC320DXJ (SF) (A2) panel of an ERISSON 32LES70 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.
