Model: RB-22SE5FT2C
Chassis / Version: T.SIS231.T65
Panel: LM215DA-T01
MainBoard: T.SIS231.T65
IC MainBoard: 25Q64
Specifications RB-22SE5F
RUBIN RB-22SE5FT2C
General recommendations for TV LCD LED repair
It is advisable to start repairing electronic devices, including the RUBIN RB-22SE5FT2C TV, with an external examination of its external and internal elements. Often, according to certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are taken, which will determine a further algorithm for troubleshooting and localizing a defect. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
Sometimes the RUBIN RB-22SE5FT2C 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 a malfunction is the failure of the common power module. If it works, check the processor batteries on the SSB (Main Board). In the absence of swollen capacitors of the secondary rectifier filter, diagnostics of the power supply should begin with checking the fuse and, if it is broken, it is necessary first of all to check all power semiconductor elements of the primary circuit - diodes and transistors for the likelihood of an avalanche or thermal breakdown.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits, checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If RUBIN RB-22SE5FT2C has no image, but there is sound, the LM215DA-T01 M00 panel backlight LEDs or their power converter may be faulty. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good working order.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their conclusions, as well as the reliability of the connections in the connectors and the ration of the connector pins.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.
On the T.SIS231.T65 motherboard, in the event of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software).
When repairing an MB board, you need to check its components 25Q64. Defective elements should be replaced. If BGA chips are installed, their failure is usually localized by warming up.
Once again, we remind TV users: you should not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust repairs only to professionals with sufficient experience in the field of electronic repair.
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-22SE5FT2C, Main: T.SIS231.T65, Panel: LM215DA-T01 M00
The appearance of the MainBoard T.SIS231.T65 is shown in the figure below:T.SIS231.T65
T.SIS231.T65 can be used in TVs:
DNS M24DM8 (Panel M236HGE-L20 ReV.C1), DNS 22AE7000 (Panel CX215LEDM), ERISSON 28LEP91 (Panel st2751a01-1), ROLSEN RL-19E1501T2C (Panel V185BJ1-PE1), RUBIN RB-22SE5FT2C (Panel LM215DA-T01), RUBIN RB-22SE9FT2C (Panel M215HTN01.1), SHIVAKI STV-24LEDGR9 (Panel M236HGE-L20 Rev.C1), SHIVAKI STV-24LEDGW9 (Panel M236H3-LA3), SHIVAKI STV-24LED12 (Panel M236HGE-P01), THOMSON T24E09DU-01B (Panel V236BJ1-P03 (C1)).
Key features of the RUBIN RB-22SE5FT2C device:
Installed matrix (LED-panel) LM215DA-T01.
The necessary supply voltages for all nodes of the RUBIN RB-22SE5FT2C TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a T.SIS231.T65 module, using 25Q64 microcircuits and others.
Additional technical information about the panel:
Brand: PANDA
Model: LM215DA-T01
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-22SE5F TV with LCD LM215DA-T01, 22 "(56 cm) in 16: 9 format. The required screen brightness of 220 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special LED control The LED panel of this TV is equipped with Edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution in 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 occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 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, component, VGA, HDMI, 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.
TV weight: 4 kg.
Attention! The panel LM215DA-T01 of the RUBIN RB-22SE5F 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.
