ROLSEN LED
Model: RL-32L1003U
Chassis / Version: AS-MST6M182VG-LE1
Panel: HV320WX2-201-D
T-CON: HV320WXC-200-X-PCB-X0.0 HV320WX2-201
LED driver (backlight): with integrated PSU
PWM LED driver: BIT3251
Power Supply (PSU): MP123
PWM Power: PWM SOT23-6
MainBoard: AS-MST6M182VG-LE1
IC MainBoard: MST6M182VG-LF-Z1, EN25Q32B-104HIP, PS331 (HDMI), CT3257A (RS232)
Tuner: ET-6N1E-CF101R
RL-32L1003U Specifications
ROLSEN RL-32L1003U
General recommendations for TV LCD LED repair
Possible manifestations of defects
- The ROLSEN RL-32L1003U TV does not turn on, does not respond to the remote control and control panel buttons, the indicators do not light up or flash.
With such manifestations, a malfunction is most likely found in the MP123 power supply module. It is necessary to measure the secondary output voltages, and in their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in short-circuit mode, and in case of short-circuit in the elements of the primary circuit, the mains fuse usually breaks.
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 be PWM (PWM) PWM SOT23-6. It is checked only by replacing it with a known good one.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
A malfunction is usually in these cases most likely in the backlight units of the display matrix. The reason may 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 AS-MST6M182VG-LE1 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Repair of the board and replacement of microcircuits MST6M182VG-LF-Z1, EN25Q32B-104HIP, PS331 (HDMI), CT3257A (RS232) are made if the necessary equipment and the corresponding element base are available. Failures associated with the use of BGA soldering technologies can be localized by warming up.
If there is no reception of TV channels, but the TV is working properly from external devices, first of all, you need to check the power supply voltage of the ET-6N1E-CF101R tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Owners of the RL-32L1003U TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
Additional MainBoard RepairThe appearance of the MainBoard AS-MST6M182VG-LE1 is shown in the figure below:
AS-MST6M182VG-LE1
AS-MST6M182VG-LE1 can be used in TVs:
ROLSEN RL-32L1003U (Panel HV320WX2-201-D), ROLSEN RL-32L1005U (Panel LC320EXN-SEA1), ROLSEN RL-32L1005U-GR (Panel HV32WX2-201 / D).
External view of the power supply
MP123:
MP123
The main features of the ROLSEN RL-32L1003U device:
The matrix (LED panel) HV320WX2-201-D is installed.
The matrix control uses the Timing Controller (T-CON) HV320WXC-200-X-PCB-X0.0.
To power the backlight LEDs, a converter combined with a power supply is used, controlled by a BIT3251 PWM controller.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32L1003U TV is carried out by the MP123 power module, or its analogs using PWM SOT23-6 microcircuits.
MainBoard - the main board (motherboard) is an AS-MST6M182VG-LE1 module, using MST6M182VG-LF-Z1, EN25Q32B-104HIP, PS331 (HDMI), CT3257A (RS232) and others.
Tuner ET-6N1E-CF101R provides reception of television programs and tuning to channels.
ROLSEN RL-32L1003U TV with LCD HV320WX2-201-D, 32 "(81 cm) 16: 9. The LED panel of this TV is equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready) .Input high frequency or video signal can be processed in analog PAL systems , 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, MKV, JPEG.
Speaker power 12 W (2x6 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, SCART, VGA, HDMI x3, 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.
The power consumed by the TV in operating mode from the network is 90 watts.
TV weight: 10.7 kg.
Attention! The HV320WX2-201-D panel of the ROLSEN RL-32L1003U LED TV is an expensive and unreliable element.
Do not allow any impacts on the glass and pressure on the screen surface to avoid damage to the LED panel!