Technical description and composition of the ROLSEN RL-19E1308T2C TV, panel type and modules used. The composition of the modules.ROLSEN LED
Model: RL-19E1308T2C
Chassis / Version: JUC7.820
Panel: C185X14-E3-P (G2)
MainBoard: JUC7.820.00085101
IC MainBoard: CPU: Mstar, SPI FLASH GD25Q64BS, DRAM: H5TQ1G63EFR, Sound: YD1517P
Tuner: DT21WN-2A-E
RL-19E1308T2C Specifications
ROLSEN RL-19E1308T2C
General recommendations for TV LCD LED repair
ROLSEN RL-19E1308T2C TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Many visible changes in the state of elements make it possible to determine the further direction of troubleshooting and localization of the defect. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as check the connected elements and assemblies.
If the TV does not turn on, none of the indicators on its front panel will light or blink. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds and any signs of operability when turned on, there is a certain probability that the power module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain ROLSEN models. It is advisable to start diagnostics of the power supply module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. In the event that the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in a breakdown state in such situations.
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 the ROLSEN RL-19E1308T2C has no picture, but there is sound and the TV is controlled from the remote control, a malfunction is likely in the C185X14-E3-P (G2) panel backlight circuits. LEDs or power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to make sure that the electrolytic capacitors of the rectifier filter supplying the LED driver are in good working order, and check the LEDs by connecting those that are known to be working for diagnostics.
To check the health of the LEDs, as well as the contact connections in the ruler circuit, the panel must be disassembled.
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 will be required, and ideally a current source.
The JUC7.820.00085101 motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or is on continuously. In such cases, if the converters or power regulators of the microcircuits are working, it may be necessary to update the software.
Often the MB (SSB) board must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - CPU: Mstar, SPI FLASH GD25Q64BS, DRAM: H5TQ1G63EFR, Sound: YD1517P and replace the failed chips with new ones. Some malfunctions may be associated with the use of BGA soldering technologies in modern Main Board. Usually such defects are detected by local heating of the chip.
If you suspect a malfunction of the DT21WN-2A-E tuner, first of all, you need to make sure that the supply voltage of the varicaps (30-33V) is available on the corresponding output of the tuner, as well as other voltages supplying it.
Attention! Users and owners of RL-19E1308T2C TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.
SPI FLASH ROLSEN LED model: RL-19E1308T2C, chassis: JUC7.820, version: C185X14-E3-P(G2), main: JUC7.820.00085101
The appearance of the MainBoard JUC7.820.00085101 is shown in the figure below:JUC7.820.00085101
JUC7.820.00085101 can be used in TVs:
BBK 22LEM-3082/FT2C (Panel C215X14-E2-P(G2)), BBK 24LEM-1004/T2C (Panel C236X13-E4-C(G2), BBK 19LEM-1004/T2C (Panel C185X14-E3-P (G2)), BBK 19LEM-1001/T2C (Panel M185X12-E1-P (G4) ), ROLSEN RL-19E1308T2C (Panel C185X14-E3-P(G2)), ROLSEN RL-22E1308FT2C (Panel C215X14-E2-P(G2)), ROLSEN RL-24E1302T2C (Panel C236X13-E2-C (G2) ).
The main features of the ROLSEN RL-19E1308T2C device:
Installed matrix (LED panel) C185X14-E3-P (G2).
The necessary supply voltages for all nodes of the ROLSEN RL-19E1308T2C TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a JUC7.820.00085101 module, using CPU chips: Mstar, SPI FLASH GD25Q64BS, DRAM: H5TQ1G63EFR, Sound: YD1517P and others.
The DT21WN-2A-E tuner provides reception of television programs and tuning to channels.
ROLSEN RL-19E1308T2C TV with LCD C185X14-E3-P (G2), diagonal 19 "(48 cm) in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio 100000: 1 is achieved by special control of the LEDs. The LED-panel of this TV implements the edge illumination of LEDs - Edge LED. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the 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 takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
Speaker power 4 W (2x2 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
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 digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 439x340x102 mm, without stand 439x281x52 mm.
TV weight: 3.4 kg.
Attention! Panel C185X14-E3-P (G2) LED TV ROLSEN RL-19E1308T2C 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.