Technical description and composition of the RUBIN RB-24SE9T2S TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-24SE9T2S
Chassis / Version: CV512L-B
Panel: CX236LEDM
LED backlight: RF-AD236C14-1007S-01 A2
LED driver (backlight): integrated into PSU
Power Supply (PSU): SHG2401A-207S DLBB393
PWM Power: SOT-23-6 (OB2273)
MainBoard: CV512L-B JRA-512LB-15H
IC MainBoard: CPU: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P
Tuner: DMI21-C5I2RH, CDT-9NS161-RD41
Control: IR: 200-GJR-LE32190-0H
Specifications RB-24SE9T2S
RUBIN RB-24SE9T2S
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- RUBIN RB-24SE9T2S TV does not turn on and does not show any signs of turning on, does not respond to control buttons and to the remote control.
Often in such cases, the SHG2401A-207S power supply module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
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 immediately disappears
As a rule, in such cases there is no display backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is required to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the CV512L-B motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and 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 health of its elements - CPU: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P. Defective components must be replaced.
If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the DMI21-C5I2RH, CDT-9NS161-RD41 tuner terminals are in accordance. 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.
Attention to TV owners! Attempts to repair RUBIN RB-24SE9T2S yourself are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Main CV512L-B
The appearance of the MainBoard CV512L-B is shown in the figure below:CV512L-B
CV512L-B can be used in TVs:
BBK 28LEM-1021/T2C (Panel SV275SHD HX010403 X41), BBK 22LEM-1026/FT2C (Panel M215HGE-P02), DEXP H24B7100E (Panel CX236LEDM (V236BJ1-P01)), DEXP F22B7000E/B (Panel CX215LEDM), ERISSON 22LEE31T2 (Panel CX215LEDM), RUBIN RB-22SE2FT2S (Panel 1080p Full HD 1920x1080), SUPRA STV-LC24T880WL (Panel HV236WHB-N00), SUPRA STV-LC22T880FL (Panel LC215DTBA).
External view of the power supply
Key features of the RUBIN RB-24SE9T2S device:
Installed matrix (LED-panel) CX236LEDM.
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-24SE9T2S TV is carried out by the SHG2401A-207S power module, or its analogs using SOT-23-6 (OB2273) microcircuits.
MainBoard - the main board (motherboard) is a CV512L-B module, using CPU chips: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P and others.
Tuner DMI21-C5I2RH, CDT-9NS161-RD41 provides reception of television programs and tuning to channels.
RUBIN RB-24SE9T2S TV with LCD CX236LEDM, diagonal 24 "(61 cm), 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 200,000: 1 is achieved by special control of the LEDs. technology of production of the screen of this TV model is realized LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. and the digital signal is generated in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power of 10 W (2x5 W) is provided by two speakers. Uses NICAM stereo processing system and 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, USB. 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.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Dimensions: with stand 551x356x175 mm, without stand 551x333x54 mm.
TV weight: with stand: 4.3 kg, without stand: 3.7 kg.
Attention! The CX236LEDM panel of the RUBIN RB-24SE9T2S 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 ................................ .....................