Technical description and composition of the ROLSEN RL-32A09105U TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32A09105U
Chassis / Version: RSAG7.820
Panel: LTA320AP05
Inverter (backlight): SSI320_4UA01
PWM Inverter: OZ9966SN
MOSFET Inverter: STU432S, KMB054N40DB
Trans Inverter: LT-U3208
Power Supply (PSU): RSAG7.820.1666 / ROH
PWM Power: NCP1396, NCP33262 (PFC), STR-A6059H (Standby)
MOSFET Power: K3560, K3569 (PFC)
MainBoard: RSAG7.820.1637 / ROH VER.E
IC MainBoard: MT8222, MX25L3206E, 24C16
Tuner: TDQ-6FT / W126H \ ROH
Control: EN-31603R
RL-32A09105U Specifications
ROLSEN RL-32A09105U
General recommendations for TV LCD repair
Repair and diagnostics of any electronic device, in particular ROLSEN RL-32A09105U, it is advisable to start with a careful external examination of the internal and external elements. According to some external signs of a change in the state of some elements, it sometimes becomes possible to make assumptions about the nature of the defect, as well as to determine the further direction of troubleshooting. Charred paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering on the leads of heating elements or transformers can often suggest the causes of a defect and possible consequences.
Malfunctions of the RSAG7.820.1666 / ROH power module can be expressed in different ways, for example, ROLSEN RL-32A09105U does not turn on at all and the control lamps on its front panel do not light up or blink, all signs of operability are absent. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the mains rectifier, as well as the large electrolytic capacitor of the mains rectifier filter.
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 NCP1396, NCP33262 (PFC), STR-A6059H (Standby) are subject to verification, which it is desirable to check by replacement.
Sometimes the ROLSEN RL-32A09105U TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or the lamps themselves, which can be checked by replacing. In such cases, it is necessary to make sure that all electrolytic capacitors of the filter are in good working order for the power supply of the inverter itself, including in the power supply unit (power supply unit). All necessary precautions must be taken when disabling the inverter protection during diagnostics, and do not leave it disabled after repair is completed.
Repair of the RSAG7.820.1637 / ROH VER.E motherboard must begin with diagnostics and testing of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. When repairing MB board, it is necessary to check its components MT8222, MX25L3206E, 24C16. Defective elements should be replaced. If chips with BGA soldering technology are used, the problem in its implementation is detected by local heating of the chip.
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 supply voltage of the TDQ-6FT / W126H \ ROH tuner and update the software. I2C communication pulses must be monitored with an oscilloscope.
Users must remember that attempts to repair the ROLSEN RL-32A09105U TV on their own without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> RSAG7.820.1666
The appearance of the MainBoard RSAG7.820.1637 is shown in the figure below:RSAG7.820.1637
RSAG7.820.1637 can be used in TVs:
BBK LT3218SU (Panel LTA320AP02 S07), BBK LT3218SU (Panel LTA320AP02), ROLSEN RL-32A03105U (Panel LTA320AP02), ROLSEN RL-32A09105F (Panel LC320WUN (SA) (B4) ROLA), ROLS 32
Additionally by PSU
The RL-32A09105U TV has an RSAG7.820.1666 / ROH power module using a PFC (Power Factor Correction) circuit that acts as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the NCP33262 PWM controller does not allow the electrolytic capacitor of the input rectifier filter to be connected to the network directly through open diodes, when the charge current is determined by its reactance (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current follows the phase and shape of the sinusoid of the input voltage. Checking the health of the PFC unit is carried out by measuring the constant voltage across the capacitor of the network rectifier. In working mode it should be about 380V, in standby about 300V.
External view of the power supply
Main features of the ROLSEN RL-32A09105U device:
Installed matrix (LCD-panel) LTA320AP05.
To power the backlight lamps, the SSI320_4UA01 inverter is used, controlled by the OZ9966SN PWM controller. An LT-U3208 transformer is installed in the inverter converter. The switches of the STU432S, KMB054N40DB type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32A09105U TV is carried out by the RSAG7.820.1666 power supply module, or its analogs using NCP1396, NCP33262 (PFC), STR-A6059H (Standby) chips and power switches of the K3560, K3569 (PFC) type.
MainBoard - the main board (motherboard) is an RSAG7.820.1637 module, using MT8222, MX25L3206E, 24C16 and others.
Tuner TDQ-6FT / W126H \ ROH provides reception of television programs and tuning to channels.
Information from an alternative source:
ROLSEN RL-32A09105U
Panel type (matrix): LTA320AP05
Motherboard: RSAG7.820.1637 / ROH VER.E, MT8222, MX25L3206E, 24C16, Tuner: TDQ-6FT / W126H \ ROH
Invertor: SS1320_4UA01
PSU: RSAG7. 820.1666 / ROH
Remote control: EN-31603R,
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AP05-107
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.25 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 20 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
ROLSEN RL-32A09105U TV with LCD LTA320AP05, 32 "(81 cm) 16: 9. Brightness 450 cd / m² backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio 4000: 1 is provided by special operation control illumination depending on the illumination of areas in the scene.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic decomposition of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and shaping digital signal comes in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, JPEG.
Speaker power 12 W (2x6 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 x2, audio x4, S-Video, component, SCART x2, RGB, VGA, HDMI x3, USB x2. 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 140 watts.
Dimensions: with stand 788x561x252 mm, without stand 788x511x101 mm.
TV weight: 16 kg.
Attention! The LTA320AP05 panel of the ROLSEN RL-32A09105U LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!