Technical description and composition of the ROLSEN RL-24E1302T2C TV, panel type and modules used. The composition of the modules.ROLSEN LED
Model: RL-24E1302T2C
Panel: C236X13-E2-C (G2)
T-CON: V236BJ1-XC01; CM1801B, S41020, CM50, CM601
LED driver (backlight): JUG7.820.846
PWM LED driver: HAI7101PB
MOSFET LED driver: ME15N10-G
Power Supply (PSU): PW52057C REV: 01
PWM Power: IC1-LD7750RGR
MOSFET Power: KF4N65F
MainBoard: JUC7.820.00085101
IC MainBoard: H5TQ1G63EFR, MSB101A, GD25Q64BS, YD1517P, ME4953
Tuner: DT21WN-2A-E
RL-24E1302T2C Specifications
ROLSEN RL-24E1302T2C
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- ROLSEN RL-24E1302T2C TV does not turn on at all. There is no reaction either to the remote control or to the control buttons from the front panel. Indicator lamps do not light up or flash.
With similar manifestations, a malfunction is most likely found in the PW52057C power module. It is necessary to measure the secondary output supply voltages, and in their absence, check the serviceability of the power switches (KF4N65F) of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In case of thermal and avalanche breakdowns of semiconductors in secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks 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 supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch can also be the PWM IC1-LD7750RGR. It is checked only by replacing it with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
Usually, in such cases, a malfunction is detected in the LED panel backlight nodes. The reason can 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.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the JUC7.820.00085101 motherboard should begin with checking the stabilizers and power converters necessary 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 - H5TQ1G63EFR, MSB101A, GD25Q64BS, YD1517P, ME4953. Defective components must be replaced.
If the TV operates normally from external devices, but does not tune to TV channels, the DT21WN-2A-E tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the reason for the inoperability of the tuner may be a software failure.
Attention! Users and owners of RL-24E1302T2C TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-24E1302T2C , Main: JUC7.820.00085101, Panel: C236X13-E2-C (G2)
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) ).
External view of the power supply
Main features of the ROLSEN RL-24E1302T2C device:
Installed matrix (LED-panel) C236X13-E2-C (G2).
Matrix control uses Timing Controller (T-CON) V236BJ1-XC01 ;.
To power the backlight LEDs, the JUG7.820.846 LED driver is used, controlled by the HAI7101PB PWM controller. The keys of the ME15N10-G type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-24E1302T2C TV is carried out by the PW52057C power module, or its analogs using IC1-LD7750RGR microcircuits and KF4N65F power switches.
MainBoard - the main board (motherboard) is a JUC7.820.00085101 module, using H5TQ1G63EFR, MSB101A, GD25Q64BS, YD1517P, ME4953 and others.
The DT21WN-2A-E tuner provides reception of television programs and tuning to channels.
ROLSEN RL-24E1302T2C TV with LCD C236X13-E2-C, 24 "(61 cm) 16: 9. The LED panel of this TV is equipped with an edge LED - Edge LED. You can view images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready). The 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.
The power of the acoustic system of sound 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 552x370x164 mm, without stand 552x340x41 mm.
TV weight: 3.6 kg.
Attention! The panel C236X13-E2-C (G2) of the ROLSEN RL-24E1302T2C 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.