Technical description and composition of the RUBIN RB-32SE8 TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-32SE8
Chassis / Version: JUG7.820.1376 LS0D
Panel: M320X12-E1-A T320XVN02.A
LED backlight: MPEG CHGD32LB01_LED7020_V0.4_20120719 2pcs
T-CON: T320XVN02.0 CTRL BD 32T24-C05
LED driver (backlight): integrated into PSU LED output 190mA, 120V
Power Supply (PSU): MPS35D-1MF-190
MainBoard: JUG7.820.1376 LS0D 2500M
IC MainBoard: CPU: TSUM59XES-XG, SPI Flash: EN25P32
Tuner: NoName
Specifications RB-32SE8
RUBIN RB-32SE8
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- RUBIN RB-32SE8 TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
Often in such cases, the MPS35D-1MF-190 power supply module is faulty. Then you should measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of the power switches and rectifier diodes of the converters for the presence of a possible short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short-circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the JUG7.820.1376 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: TSUM59XES-XG, SPI Flash: EN25P32 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (detected by warming up).
If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the NoName tuner outputs. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.
Remember! Attempts to self-repair the RUBIN RB-32SE8 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-32SE8, Main: JUG7.820.1376 LS0D, Panel: M320X12-E1-A
Key features of the RUBIN RB-32SE8 device:Installed matrix (LED panel) M320X12-E1-A T320XVN02.A.
The matrix control uses the T320XVN02.0 Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-32SE8 TV is carried out by the MPS35D-1MF-190 power module, or its analogs.
MainBoard - the main board (motherboard) is a JUG7.820.1376 module, using CPU chips: TSUM59XES-XG, SPI Flash: EN25P32 and others.
Tuner NoName provides reception of television programs and tuning to channels.
RUBIN RB-32SE8 TV with LCD M320X12-E1-A, 32 "(81 cm) diagonal, 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 200,000: 1 is achieved by special control The LED panel of this TV is equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready). The input high-frequency or video signal can be processed in analog PAL systems , SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x2, USB x2. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Dimensions: with stand 731x500x166 mm, without stand 731x495x50 mm.
TV weight: 6 kg.
Attention! The panel M320X12-E1-A T320XVN02.A of the RUBIN RB-32SE8 LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.