Technical description and composition of the RUBIN RB-40SE9FT2C TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-40SE9FT2C
Chassis / Version: TP.SIS231.PT85
Panel: CX400DLEDM
LED backlight: ZDCX40D10-ZC14F-02 // CXD400410000-X3
T-CON: V460HJ6-PE1
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
MOSFET LED driver: AOD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: PWM SOT23-6
MOSFET Power: N-FET TO-220
MainBoard: TP.SIS231.PT85
IC MainBoard: CPU: SIS231, DRAM: NT5CB64M16FP-DH, SPI Flash: 25Q64, TPA3110LD2, SI2168, RT7237
Tuner: NoName
Specifications RB-40SE9FT2C
RUBIN RB-40SE9FT2C
General recommendations for TV LCD LED repair
Possible manifestations of defects
- The RUBIN RB-40SE9FT2C TV does not turn on and does not show any signs of turning on, does not respond to control buttons and the remote control.
In such cases, the AC / DC converter of the mains voltage, which is combined with the main board TP.SIS231.PT85, is often faulty. It is necessary to measure the output voltages in its secondary circuits, and if they are completely absent, the serviceability of the power switches (N-FET TO-220) and rectifier diodes should be checked for a possible breakdown (short circuit).
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency mode in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM regulators (PWM) PWM SOT23-6, if they do not have visible damage to the case and an open short circuit between the pins, are usually checked by replacing.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
Often in such cases, there is no backlighting of the LED panel. The reason may 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 should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN junction of the Zener diode will either be cut off, or broken through in the K / Z.
- The TV does not turn on, the indicator signals the standby or operating mode, or blinks.
Repair or diagnostics of the TP.SIS231.PT85 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and the matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: SIS231, NAND: NT5CB64M16FP-DH, SPI Flash: 25Q64, TPA3110LD2, SI2168, RT7237. Defective components must be replaced.
If you suspect a malfunction of the NoName tuner, first of all, you need to make sure that the software is correct, as well as the presence of the necessary levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding outputs of the tuner.
Users and owners of TVs should remember that attempts to repair the RUBIN RB-40SE9FT2C TV on their own without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Power supply Chassis TP.SIS231.PT85
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-40SE9FT2C, Main: TP.SIS231.PT85, Panel: CX400DLEDM
The appearance of the MainBoard TP.SIS231.PT851 is shown in the figure below:TP.SIS231.PT851
TP.SIS231.PT85 can be used in TVs:
DNS M39DM8 (Panel V390HJ1-P02 Rev C1), DNS S32DC1 (Panel T320XVD01.0), DNS E32D18 (Panel ST3151A05-5 CX315DLEDM), DNS V32D8100S (Panel LSC320HN04-002), ERISSON 40LEP92 (Panel LSC400HN01 G01), ROLSEN RL-39S1502T2C (Panel V390BJ1-L01-D00), RUBIN RB-40D5FT2C (Panel 390HJ5-XCPE1), RUBIN RB-40SE9FT2C (Panel CX400DLEDM), SUPRA STV-LC32T871WL (Panel JHD315GH-E31), SUPRA STV-LC40T871FL (Panel JHD400GF), TELEFUNKEN TF-LED32S26T2 (Panel MT3151A05).
Key features of the RUBIN RB-40SE9FT2C device:
Installed matrix (LED panel) CX400DLEDM.
Matrix control uses Timing Controller (T-CON) V460HJ6-PE1.
To power the backlight LEDs, a converter combined with the main board TP.SIS231.PT85 is used, controlled by the OB3350CP PWM controller. AOD4454 type keys are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter circuit using PWM SOT23-6 microcircuits and N-FET TO-220 power switches.
MainBoard - the main board (motherboard) is a TP.SIS231.PT85 module, using CPU: SIS231 chips, DRAM: NT5CB64M16FP-DH, SPI Flash: 25Q64, TPA3110LD2, SI2168, RT7237 and others.
Tuner NoName provides reception of television programs and tuning to channels.
RUBIN RB-40SE9FT2C TV with LCD CX400DLEDM, diagonal 40 "(102 cm) 16: 9. The required brightness of the screen 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 700,000: 1 is achieved by special control of LED operation. The LED panels of this TV are equipped with edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal formation is performed in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, MKV, JPEG.
Speaker power 20 W (2x10 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, audio x2, component, SCART, VGA, HDMI x3, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The power consumed by the TV in operating mode from the mains is 75 W.
Dimensions: with stand 906x574x210 mm, without stand 906x515x86 mm.
TV weight: 8.7 kg.
Attention! The CX400DLEDM panel of the RUBIN RB-40SE9FT2C 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.