Technical description and composition of the ROLSEN RL-32A09105F TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32A09105F
Chassis / Version: RSAG7.820
Panel: LC320WUN (SA) (B4)
Inverter (backlight): PNEL-T803 B Rev-0.2 6632L-0601A
PWM Inverter: BD9897FS
MOSFET Inverter: FDD8447L (3)
Trans Inverter: L2-EF32-B-10304B-KI
Power Supply (PSU): HLP-2642WA - RSAG7.820.1673 / ROH VER.F
PWM Power: LNK564PN (7), NCP33262 (PFC), NCP1396AD (15), 1579 (8)
MOSFET Power: K3569, 4820N (8)
MainBoard: RSAG7.820.1637 / ROH VerE
IC MainBoard: Cpu: MT8222, Flash: MX25L3206E, Eeprom: 24C16, R2A15108 FP
Tuner: TDQ-6FT / W126H
Control: EN-31603R
RL-32A09105F Specifications
ROLSEN RL-32A09105F
General recommendations for TV LCD repair
Repair and diagnostics of any electronic device, in particular ROLSEN with RSAG7.820 chassis, it is advisable to begin with a careful external examination of the internal and external elements. Visible damage to elements can sometimes indicate the direction of searching for a defect even before the necessary measurements are taken. Elements with visible damage, for example, capacitors swollen after electrolyte boiling, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master to guess the causes and possible consequences of the malfunction.
In the absence of any signs of operability, when the ROLSEN RL-32A09105F does not turn on and does not signal anything with the control lamps on the panel, there is a possibility of a malfunction of the RSAG7.820.1673 / ROH VER.F TV power module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it is broken, the power elements of the K3569 transistors and the rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dry electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible marriage of the PWM chip LNK564PN (7), 33262 PAST (8), NCP1396AG (15) 1579 (8) 4820N (8) from the manufacturer.
Sometimes the ROLSEN RL-32A09105F 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 the power supply unit (power supply unit). When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all standard protection circuits must be restored.
On the RSAG7.820.1637 / ROH VerE motherboard, in case of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software). In some cases, the elements of the MB (SSB) board - R2A15108 FP, require checking or replacing (if necessary). In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
We remind users again! Attempts to repair the ROLSEN RL-32A09105F TV without proper qualifications and experience can lead to its complete non-repairability!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-32A09105F, Main: RSAG7.820.1637/ROH VerE , Panel: LC320WUN (SA)(B4)
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)), ROLSEN RL-32A09105U (Panel LTA320AP05).
Additionally by PSU
The RL-32A09105F model uses an HLP-2642WA power supply with a PFC (Power Factor Correction) node - an active filter for higher harmonics of the consumed current. In fact, it is a step-up converter based on the 33262 PWM regulator, which excludes the charging current of the electrolytic capacitor of the mains rectifier filter directly from the mains through open diodes, when its charging current is determined by its reactance.
As a result of the converter operation, the envelope of high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The serviceability of the PFC unit can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the network rectifier in operating mode.
External view of the power supply
The main features of the ROLSEN RL-32A09105F device:
Installed matrix (LCD panel) LC320WUN (SA) (B4).
The inverter PNEL-T803 is used to power the backlight lamps, it is controlled by the PWM controller BD9897FS. The transformer L2-EF32-B-10304B-KI is installed in the inverter converter. FDD8447L switches are used as power elements of the inverter (3).
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32A09105F TV is carried out by the HLP-2642WA power module, or its analogs using LNK564PN (7), NCP33262 (PFC), NCP1396AD (15), 1579 (8) power switches and power switches of the K3569 type, 4820N (8).
MainBoard - the main board (motherboard) is an RSAG7.820.1637 module, using chips Cpu: MT8222, Flash: MX25L3206E, Eeprom: 24C16, R2A15108 FP and others.
The TDQ-6FT / W126H tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WUN-SAB4
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1300: 1
Display Colors: 1.06B (8-bit + Dithering), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
ROLSEN RL-32A09105F TV with LCD LC320WUN, 32 "(81 cm) 16: 9 diagonal. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum brightness, is 4000: 1. Dynamic contrast ratio of 35000: 1 is provided by a special control of the backlight depending on the illumination of areas in the scene.The design and technical capabilities of the TV provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal shaping occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, DivX, 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 160 watts.
Dimensions: with stand 800x599x242 mm, without stand 800x545x107 mm.
TV weight: 14 kg.
Attention! ROLSEN RL-32A09105F LCD TV panel LC320WUN (SA) (B4) is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!