Technical description and composition of the RUBIN RB-19S2UD TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-19S2UD
Chassis / Version: MS6M181.7A
Panel: M185B3-LA1
LED driver (backlight): MKN LE2360A-V02
PWM LED driver: EUP2589 m / x
MOSFET LED driver: STU606S tr-r
Power Supply (PSU): adapter FJ-SW1204000T 12V 4A
MainBoard: CDT-3SP512-36
IC MainBoard: DL-10HA-00-009 FORYOU DVD Drive
Specifications RB-19S2UD
RUBIN RB-19S2UD
General recommendations for TV LCD LED repair
Diagnostics of malfunctions and repair of RUBIN RB-19S2UD, like other electronic devices, is recommended to begin with an external examination of external and internal elements. According to some external signs of a change in the state of some elements, it sometimes becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. If ring cracks are found in the soldering of the terminals of the elements or broken connecting tracks, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.
Sometimes the RUBIN RB-19S2UD TV just won't turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the general power supply adapter FJ-SW1204000T 12V 4A. If it works, check the processor batteries on the SSB (Main Board). When repairing a power supply, it is advisable to start diagnostics with checking the mains fuse and electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a break in the fuse, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply unit. First of all, it is necessary to check the diodes of the mains voltage rectifier bridge and the power switch (s) of the converter.
As a rule, switches in switching power supplies (SMPS) are quite reliable and rarely fail without reasons that should be looked for by checking other circuit components - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM microcircuit is checked by replacing it with a known good one.
If, when you turn on RUBIN RB-19S2UD, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the M185B3-LA1 panel backlight LED circuit, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
Often it becomes necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
It is impossible to identify an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes.
Diagnostics and repair of the CDT-3SP512-36 motherboard is carried out by checking the functionality of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - the DL-10HA-00-009 FORYOU DVD drive with new or known serviceable ones. In cases where BGA technologies are used, defects are usually localized by heating.
Remember! Attempts to repair the RUBIN RB-19S2UD 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 SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> RUBIN LED RB-19S2U Chassis: T.MS6M181.7A
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-19S2U, Main: T.MS18VG.62B 11505, Panel: M185BGE-P02
The main features of the RUBIN RB-19S2UD device:Installed matrix (LED panel) M185B3-LA1.
The LED driver MKN is used to power the backlight LEDs, it is controlled by the PWM controller EUP2589 m / x. The switches of the STU606S tr-r type are used as power elements of the LED driver.
To power all the internal components of the RUBIN RB-19S2UD TV, an external source such as adapter FJ-SW1204000T 12V 4A is used.
MainBoard - the main board (motherboard) is a CDT-3SP512-36 module, using DL-10HA-00-009 FORYOU DVD drive microcircuits and others.
Additional technical information about the panel:
Brand: CMO
Model: M185B3-LA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 70%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 13S8P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-19S2UD TV with LCD M185B3-LA1, diagonal 19 "(48 cm) in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 70,000: 1 is achieved by special LED 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 a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM . Graphic processing and digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i. Supported media file formats: MP3, WMA, MPEG4, VideoCD, Picture CD, 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, audio x2, component, 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 power consumed by the TV in operating mode from the network is 48 watts.
Overall dimensions: 505x395x130 mm.
TV weight: 3.3 kg.
Attention! The panel M185B3-LA1 of the RUBIN RB-19S2UD 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.