Technical description and composition of the RUBIN RB-23K101UF TV, panel type and modules used. The composition of the modules.RUBIN
Model: RB-23K101UF
Chassis / Version: M181
Panel: LM230WF1 (TL) (E3)
Inverter (backlight): KB6160 471R1016 467-01A2-23731G
PWM Inverter: MP1007ES (16)
MOSFET Inverter: ME12N04 (3)
Trans Inverter: KTC 401-9322-27411G, KTC 401-8322-27412G
Power Supply (PSU): 465-01A2-18001G LYD-3 465R1013 K-56L1
PWM Power: LD7575 (PWM flyback), OB5269CP (8)
MOSFET Power: SW7N65
MainBoard: MST6M181-T6S
IC MainBoard: YD1517P (18), MP1482DS (8), IT6633E-P, MT4953 (8),
Tuner: CDT-3FC2I2-36
Specifications RB-23K101UF
RUBIN RB-23K101UF
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- RUBIN RB-23K101UF TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up or blink, the TV does not respond to the remote control and control buttons.
In some of these cases, the defect is found in the 465-01A2-18001G power module. It is then necessary to measure its output voltages and, if they are absent, the power switches (SW7N65) and rectifier diodes of the converters should be checked for the probability of a 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.
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 controllers (PWM) LD7575 (PWM flyback), OB5269CP (8), if they do not have visible damage to the case and an outright short circuit between the pins, are usually checked by replacing.
- There is no picture, but there is sound and reaction to the remote control. Or, for a second, the image may appear immediately after switching on.
These manifestations can be triggered by the power module, or by defects in the inverter, as well as by skewing currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter for the power supply of the inverter are in good working order, you should make sure that the lamps are in good condition, then you need to check the keys of the converter and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- 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 M181-B9P191-00028 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). Repair of the board and replacement of the YD1517P (18), MP1482DS (8), IT6633E-P, MT4953 (8) microcircuits are carried out if the necessary equipment and the corresponding element base are available. Failures associated with the use of BGA soldering technologies can be localized by warming up.
Before changing the tuner CDT-3FC2I2-36, if it is not possible to tune to TV channels, you should make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Attention! Users and owners of RB-23K101UF TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.
FLASH RUBIN RB-23K101UF, Main Board: 471-01A2-61601G, Cpu: MST6M181-T6S, Spi Flash: MX25L3205, Panel: LM230WF1, Hdmi: IT6633E-P, Audio: SA7454
External view of the power supplyKey features of the RUBIN RB-23K101UF device:
Installed matrix (LCD panel) LM230WF1 (TL) (E3).
The KB6160 inverter is used to power the backlight lamps, it is controlled by the MP1007ES PWM controller (16). The transformer KTC 401-9322-27411G, KTC 401-8322-27412G is installed in the inverter converter. The keys of the ME12N04 type (3) are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-23K101UF TV is carried out by the 465-01A2-18001G power module, or its analogs using LD7575 (PWM flyback), OB5269CP (8) power switches and SW7N65 power switches.
MainBoard - the main board (motherboard) is an MST6M181-T6S module, using the YD1517P (18), MP1482DS (8), IT6633E-P, MT4953 (8) microcircuits, and others.
The CDT-3FC2I2-36 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LM230WF1-TLE3
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 509.184x286.416 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-23K101UF TV with LCD LM230WF1, 23 "(58 cm) 16: 9 diagonal. Screen brightness of 300 cd / m² is backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 30,000: 1 is provided by special operation control illumination depending on the illumination of areas in the scene.The design and technical capabilities of the TV provide for viewing programs and films in high quality HD at a resolution of 1920x1080 pixels in graphic decomposition 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 shaping takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, S-Video, component, VGA, HDMI x2, 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.
The power consumed by the TV in operating mode from the network is 65 W.
Dimensions: without stand 557x407x71 mm.
TV weight: without stand: 5.5 kg.
Attention! The LM230WF1 (TL) (E3) panel of the RUBIN RB-23K101UF LCD TV is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!