Technical description and composition of the RUBIN RB-32K102U TV, panel type and modules used. The composition of the modules.RUBIN
Model: RB-32K102U
Chassis / Version: HK-T.MST182V03
Panel: T315XW03 V.D
Inverter (backlight): INV32T4UB Rev0.1
Trans Inverter: LT-T32A NY1111ECY
Power Supply (PSU): LK-PI320102B
MainBoard: HK-T.MST182V03 1222D
IC MainBoard: Flahs: 25Q32
Tuner: T315-LOGOG
RUBIN LED
Model: RB-32K102U
Panel: T315XW06 V.3
T-CON: HK-T.MST182V03 (HK-12090019)
LED driver (backlight): LK-P1320102B (MO29150015)
PWM LED driver: AS893, 3843CM, D2009A
MOSFET LED driver: QND4N0203
Trans LED driver: EAC01 EACOM01 3885101,
Power Supply (PSU): LK-PL320102B (MO29150015)
PWM Power: TC1AA (6753), FAN7530 (PFC)
MOSFET Power: 5N50, JCS7N65F
MainBoard: MAIN_PCB
IC MainBoard: FR9886, IT6633F-P, SGM330A, R2A122101, P32B-104H1P (AJH144A),
Tuner: T315S03
Control: KM-1998
Specifications RB-32K102U
RUBIN RB-32K102U
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- RUBIN RB-32K102U 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.
In such cases, you should start looking for a fault in the LK-PL320102B power supply circuits. Its output voltages should be measured, and in their absence, check the serviceability of the power switches (5N50, JCS7N65F) of the converters and rectifier diodes for the probability of a short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and less often the current sensor in the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) TC1AA (6753), FAN7530 (PFC), in the absence of external damage and a short circuit between the terminals, are checked by replacing them with known good ones.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and immediately disappear.
The malfunction in most of such cases is found in the nodes and elements of the LED panel backlight. 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 is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts is required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light one 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off, or pierced in the K / Z.
- 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 MAIN_PCB 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). If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - FR9886, IT6633F-P, SGM330A, R2A122101, P32B-104H1P (AJH144A) ,. 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 terminals of the T315S03 tuner match. 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.
Owners of the RB-32K102U TV are advised to contact only qualified specialists with the necessary work experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-32K102U , Main: HK-T.MST182V03, Spi Flash: cFeon Q32B-104HIP, Panel: T315XW06 V.D
The LK-PL320102B power supply module uses a Power Factor Correction (PFC) circuit to eliminate multiple AC harmonics introduced by the device into the mains. The PFC unit is a step-up converter based on the FAN7530 PWM regulator, which evenly distributes high-frequency pulses of the charging current of the electrolytic capacitor of the mains rectifier filter within a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the mains frequency), but by the elements of the converter. As a result, a change in the pulse amplitude (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The serviceability of the PFC unit is indicated by the presence of an increased voltage (about + 380V) in operating mode on the capacitor of the line filter.Key features of the RUBIN RB-32K102U device:
Installed matrix (LED panel) T315XW06 V.3.
Matrix control uses Timing Controller (T-CON) HK-T.MST182V03 (HK-12090019).
The LED driver LK-P1320102B (MO29150015) is used to power the backlight LEDs, it is controlled by the PWM controller AS893, 3843CM, D2009A. The transformer EAC01 EACOM01 3885101 is installed in the LED driver converter,. QND4N0203 keys are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-32K102U TV is carried out by the LK-PL320102B power module, or its analogs using TC1AA (6753), FAN7530 (PFC) microcircuits and power switches of the 5N50, JCS7N65F type.
MainBoard - the main board (motherboard) is a MAIN_PCB module, using chips FR9886, IT6633F-P, SGM330A, R2A122101, P32B-104H1P (AJH144A), and others.
The T315S03 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW06 V3 CELL
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%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
RUBIN RB-32K102U TV with LCD T315XW06, 32 "(81 cm) 16: 9. Brightness 450 cd / m² backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio 140,000: 1 is provided by special control illumination depending on the illumination of areas in the scene.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. Graphic processing and shaping digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, MPEG4, Xvid, MKV, JPEG.
Speaker power 16 W (2x8 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, 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, 1360x768.
The power consumed by the TV in operating mode from the network is 130 watts.
Overall dimensions: 855x610x150 mm.
TV weight: 11.5 kg.
Attention! The T315XW06 V.3 panel of the RUBIN RB-32K102U 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!