Technical description and composition of the ROLSEN RL-19L1002U TV, panel type and modules used. The composition of the modules.ROLSEN LED
Model: RL-19L1002U
Chassis / Version: 471-01A2-T7601G
Panel: LM185WH2-TL A1
LED driver (backlight): integrated into PSU
PWM LED driver: MP3389EF
MOSFET LED driver: EP4655S ME4436
Power Supply (PSU): K-40L1
PWM Power: OB5269CP
MainBoard: 471-01A2-T7601G
IC MainBoard: EP46551 HCF4052 24C02. TPA1517 / SA7454
Tuner: F21CT02BK-E TCL101007766 0200
ROLSEN
Model: RL-19L1002U
Chassis / Version: M181
Panel: 19 inch
Inverter (backlight): integrated into PSU
PWM Inverter: MP3369EF (28)
MOSFET Inverter: ME15N10-G, SPP9527 (8pin)
Power Supply (PSU): K-L-NM1 465-0101-B201G Rev3 PBM2-BG216-0I127
PWM Power: OB5269CP, NCP1271
MOSFET Power: SW7N65
MainBoard: MST6M181-T7S T7 471-01A4-61702G Rev A4 M181-BCP229-05026
IC MainBoard: TDA1517P, IT6633E-P, TE330E (16), AS1084R, AT8284N (8) (MP1482),
Tuner: F50CT-2DD-E (X)
RL-19L1002U Specifications
ROLSEN RL-19L1002U
General recommendations for TV LCD repair
ROLSEN TV made on the M181 chassis, like many other electronic devices, it is advisable to start repairing with an inspection of all 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. Swollen electrolytic or sintered capacitors, charred resistors, ring cracks in the soldering of the element leads - all this can significantly help the master to determine the causes and consequences of the malfunctions in the TV.
If the power supply module PBM2-BG216-0I127 K-L-NM1 465-0101-B201G Rev3 is faulty, external manifestations may be different, for example, ROLSEN RL-19L1002U does not turn on at all and there is no indication of the control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. 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.
It should be borne in mind that in the practice of repair, it is extremely rare for key transistors in switching power supplies (SMPS) to fail without reasons that should be looked for by checking other components, for example, a key breakdown can provoke faulty elements of damper circuits, or dried electrolytic capacitors or broken primary resistors power supply circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator microcircuit are subject to verification, which it is advisable to check by replacement.
If, when turning on the TV, the image appears and immediately disappears, or is absent initially when turned on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (backlight power converter). In such cases, the lamps, the inverter and the common power supply module must be checked, in which the electrolytic capacitors of the rectifier filter supplying the inverter must be checked. If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
Diagnostics and repair of the MST6M181-T7S T7 471-01A4-61702G Rev A4 M181-BCP229-05026 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. When repairing the MB board, you need to check its components TDA1517P, IT6633E-P, TE330E (16), AS1084R, AT8284N (8) (MP1482) ,. Defective elements must be replaced. If BGA chips are installed, their failure is usually localized by warming up. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
Remember! Attempts of self-repair by users of the ROLSEN RL-19L1002U TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-19L1002, Main: 471-01A2-T7601G, Panel: LM185WH2-TL A1
The appearance of the MainBoard MST6M181-T7S is shown in the figure below:The MST6M181-T7S motherboard uses an MST6M181VS-LF-Z1 processor combined with a scaler, external random access memory (RAM) DDR Winbond W9425G6JH type and SPI flash ROM 25Q32.
It is advisable to start MainBoard repair by checking the supply voltages of the linear stabilizers and voltage converters required to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. The power supply of the LCD panel is 5V or 12V, depending on the type of panel used, it can be measured directly at the LVDS connector. In cases where the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons in the presence of all supply voltages, the SPI Flash software should be updated.
MST6M181-T7S can be used in TVs:
ERISSON 22LEK14 (Panel M215H3-LA1 REV.C1), ROLSEN RL-17L1002U (Panel LTN173KT01-A01), ROLSEN RL-17L1002U (Panel LTN173KT02 ), ROLSEN RL-19L1002U (Panel 19 "), ROLSEN RL-22L1002UF (Panel LTM215HT04 B2 (5v)), ROLSEN RL-23L1002UF (Panel M230WA01-ED G2 EE01 LED), RUBIN RB-19SL1U (Panel 19 "), RUBIN RB-22SL1UF (Panel LTM215HT04 led), RUBIN RB-23SL1UF (Panel 23 ").
External view of the power supply
The main features of the ROLSEN RL-19L1002U device:
Installed matrix (LCD panel) 19 inches.
A converter combined with a power supply is used to power the backlight lamps, it is controlled by the MP3369EF PWM controller (28). The keys of the type ME15N10-G, SPP9527 (8pin) are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-19L1002U TV is carried out by the K-L-NM1 power module, or its analogs using OB5269CP, NCP1271 microcircuits and power switches of the SW7N65 type.
MainBoard - the main board (motherboard) is an MST6M181-T7S module, using the TDA1517P, IT6633E-P, TE330E (16), AS1084R, AT8284N (8) (MP1482) chips, and others.
The F50CT-2DD-E (X) tuner provides reception of television programs and tuning to channels.
ROLSEN RL-19L1002U LCD TV, diagonal 19 "(48 cm) in 16: 9 format. The required brightness of the screen of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 60,000: 1 is achieved by special control of LED operation. -Panels of this TV are equipped with edge lighting from LEDs - Edge LED.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 digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, WMA, MPEG4, 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 35 watts.
Dimensions: without stand 469x362x36 mm.
TV weight: without stand: 4 kg.
Attention! The panel of the ROLSEN RL-19L1002U 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.
