Technical description and composition of the ERISSON 32LES85T2 TV, type of panel and applicable modules. The composition of the modules.ERISSON LED
Model: 32LES85T2 32LES85T2SM
Chassis / Version: TP.MS338E.PB803
Panel: V320BJ6-Q01
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
PWM Power: OB2273
MOSFET Power: TK5P65W
MainBoard: TP.MS338E.PB803
IC MainBoard: MSB102KT, EMMC: THGBMDG5D1LBAIL, SPI: 25L4006E
Tuner: CDT-9NT372
Specifications 32LES85T2
ERISSON 32LES85T2
General repair guidelines for TV LCD LED
Possible malfunctions
- ERISSON 32LES85T2SM does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the common power source, the AC / DC voltage converter, which is combined with the elements of the main board TP.MS338E.PB803, is often faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (TK5P65W) and rectifier diodes for a possible partial or complete breakdown.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often 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. OB2273 PWM controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, the screen is black, there is sound, with external illumination of the screen, you can sometimes see barely noticeable outlines of the image.
Usually in such cases there is no backlight LED-panel (matrix). The reason may be a break in the LEDs, in the stabilization of their power supply, or in the violation of the contact connections of the thong connectors,
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source. By opening the panel, each LED can be checked separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. 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.MS338E.PB803 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - MSB102KT, EMMC: THGBMDG5D1LBAIL, SPI: 25L4006E with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
The malfunction of the CDT-9NT372 tuner 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.
TV users and owners need to remember that attempts to independently repair an ERISSON 32LES85T2SM TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!Repair MainBoard
The appearance of MainBoard TP.MS338E.PB803 is shown in the figure below:
TP.MS338E.PB803
Main features of the ERISSON 32LES85T2 device:
Installed matrix (LED-panel) V320BJ6-Q01.
To power the backlight LEDs, a converter is used, combined with the main board TP.MS338E.PB803.
The power module is combined with the MainBoard and is made according to the scheme of the flyback AC / DC voltage converter using OB2273 microcircuits and TK5P65W power switches.
MainBoard - the main board (motherboard) is a module TP.MS338E.PB803, using microchips MSB102KT, EMMC: THGBMDG5D1LBAIL, SPI: 25L4006E and others.
Tuner CDT-9NT372 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V320BJ6-Q01
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%)
Transmissivity: 6.0% (with Polarizer)
Contrast ratio: 3000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 8.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Trademark: ERISSON, Model: 32LES85T2.
Shortly from the TV: LCD, LED backlight, 31.5 ", 1366x768, 720p HD, DVR, sound: 16W, HDMI connectors: 2.
Manufacturer: TELEBALT plant Kaliningrad, Kamskaya, 62. Developer: TELEBALT.
The composition uses MainBoard HK.T.RT2957P68 and the LCD panel (matrix) VVH32L147G22LTY. The power supply is combined with the MainBoard.
TV ERISSON 32LES85T2 with LCD VVH32L147G22LTY, diagonal size 31.5 "(80 cm) 16: 9 format. The required brightness of the screen 180 cd / m² is provided by LED backlight LED. Contrast, as the ratio of maximum brightness to minimum, is 3000: 1. LED TV backlighting technology is implemented in the TV screen manufacturing technology of this model of TV. HD images can be viewed in high resolution at 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system 16 W (2x8 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, component, HDMI x2, USB. An output for connecting headphones is provided.
A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Overall dimensions: with stand 730x467x178 mm, without stand 730x430x82 mm.
TV Weight: with stand: 4.4 kg, without stand: 4.2 kg.
Attention! The VVH32L147G22LTY panel of an ERISSON 32LES85T2 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.