Technical description and composition of the ROLSEN RL-32D1309 TV, panel type and modules used. The composition of the modules.ROLSEN LED
Model: RL-32D1309
Chassis / Version: JUC7.820.00081373
Panel: M320X13-E1-H // M320X13-E1-A (G2)
T-CON: MT3151A05-3-XC-1
LED driver (backlight): integrated into MainBoard
PWM LED driver: 8pin
MOSFET LED driver: AODD4454
Power Supply (PSU): integrated into MainBoard
PWM Power: NCP1251
MOSFET Power: MDF7N65B
MainBoard: JUC7.820.00081373
IC MainBoard: SPI FLASH: Q32B-14HIP
Tuner: R620D
RL-32D1309 Specifications
ROLSEN RL-32D1309
General recommendations for TV LCD LED repair
Possible malfunctions
- ROLSEN RL-32D1309 TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
In such cases, the common power supply is often faulty - the AC / DC converter of the mains voltage, which is combined with the elements of the JUC7.820.00081373 main board. It is necessary to make sure that its output voltages are present and, if they are completely absent, check the power switches (MDF7N65B) and rectifier diodes for a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and less often the current sensor in the source of the key.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM) NCP1251, if they have no visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.
- 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 for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
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. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light one 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off or broken through in the K / Z.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the JUC7.820.00081373 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). Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the SPI FLASH: Q32B-14HIP elements. Malfunctions in BGA chips are usually easy to detect by warm-up.
If you suspect a malfunction of the R620D tuner, first of all, you need to make sure that the software is correct, as well as the presence of the required levels of supply voltages and pulses of data exchange with the processor via the I2C bus at the corresponding tuner pins.
Attention to TV owners! Attempts to repair ROLSEN RL-32D1309 on your own are not recommended by the manufacturer and can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-32D1309, Main: JUC7.820.00081373, Panel: M320X13-E1-A (G2)
The appearance of the MainBoard JUC7.820.00081373 is shown in the figure below:JUC7.820.00081373
JUC7.820.00081373 can be used in TVs:
AKAI LEA-32C25M (Panel M320X13-E1-H), ERISSON 32LEC2300 (Panel M320X13-E1-L), FUSION FLTV-28L32B (Panel M280X13-E1-H).
The main features of the ROLSEN RL-32D1309 device:
Installed matrix (LED-panel) M320X13-E1-H or M320X13-E1-A (G2).
Matrix control uses Timing Controller (T-CON) MT3151A05-3-XC-1.
To power the backlight LEDs, a converter combined with the JUC7.820.00081373 main board is used, controlled by an 8pin PWM controller. The keys of the AODD4454 type are used as power elements of the LED driver.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit using NCP1251 microcircuits and MDF7N65B power switches.
MainBoard - the main board (motherboard) is a JUC7.820.00081373 module, using SPI FLASH chips: Q32B-14HIP and others.
The R620D tuner provides reception of television programs and tuning to channels.
ROLSEN RL-32D1309 TV with LCD M320X13-E1-H, 32 "(81 cm) diagonal, 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 500,000: 1 is achieved by special control LED operation The LCD panel of the TV is equipped with direct backlighting with rear LEDs - Direct LED. It is possible to 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 occurs in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
Speaker power 16 W (2x8 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 x2, USB x2. 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.
Dimensions: with stand 734x490x165 mm, without stand 734x434x78 mm.
TV weight: 6 kg.
Attention! The M320X13-E1-H panel of the ROLSEN RL-32D1309 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.