Technical description and composition of the ROLSEN RL-42A09105F TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-42A09105F
Chassis / Version: RSAG7.820
Panel: LC420WUE (SC) (V1)
T-CON: LC420WUN-SAA1 6870C-0310C LG5803A, RT8250, MAXIM 9580E, 17113E
Inverter (backlight): RSAG7.820.2169 / ROH
Trans Inverter: BCK-80-39ADROH BCK-25-3001
Power Supply (PSU): / ROH
PWM Power: OB2269AP (8)
MainBoard: RSAG7.820.4395 / ROH
Tuner: HFT2-8CIV116H / ROH
Control: ER-31607R
RL-42A09105F Specifications
ROLSEN RL-42A09105F
General recommendations for TV LCD repair
Diagnostics of malfunctions and repair of ROLSEN with RSAG7.820 chassis, like other electronic devices, is recommended to start with an external examination of external and internal elements. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before starting the necessary measurements. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
Malfunctions of the RSAG7.820.2169 / ROH power module can be expressed in different ways, for example, ROLSEN RL-42A09105F 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. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. In general, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers and the fuse at the mains input. If it is cut off, then the diodes of the rectifier bridge and the key transistor of the converter, which can be located either on a separate heatsink or integrated with a PWM controller into a common microcircuit, should be checked for a breakdown of PN junctions. Options are possible.
It should be remembered that in the practice of repair, usually power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the reason that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or broken resistors in the primary circuit, or the OB2269AP PWM controller microcircuit itself may be faulty (8). It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If ROLSEN RL-42A09105F has no image, but there is sound, there is a possibility of a malfunction of the backlight lamps or their power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good working order. When diagnosing a malfunction of an inverter with disabled protection, special care must be taken, because there is a risk of failure of the power elements of the inverter. After diagnostics, it is imperative to restore the protection circuits for the inverter to operate in normal mode.
If the motherboard RSAG7.820.4395 / ROH is faulty, first of all it is necessary to check all linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes it is possible to check the health of the MB only by replacing it.
Owners of the RL-42A09105F TV are recommended to contact only qualified specialists with experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-42A09105F, Main: RSAG7.820.4395 /ROH, CPU: MST6E181VS-LF-Z1, SPI FLASH: 25L3206E, Panel: LC42WUN-SCA1
Main features of the ROLSEN RL-42A09105F device:Installed matrix (LCD panel) LC420WUE (SC) (V1).
Matrix control uses the Timing Controller (T-CON) LC420WUN-SAA1.
An inverter RSAG7.820.2169 is used to power the backlight lamps. The transformer BCK-80-39ADROH BCK-25-3001 is installed in the inverter converter.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-42A09105F TV is carried out by the RSAG7.820.2169 power module, or its analogs using OB2269AP microcircuits (8).
MainBoard - the main board (motherboard) is an RSAG7.820.4395 module.
The HFT2-8CIV116H / ROH tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
ROLSEN RL-42A09105F
Panel type (matrix): HC420EF-C22
Motherboard: RSAG7.820.2240 / ROH VER.A, 25L3205DM21, 24C16, R2A1508FR, EM6AA160TSA-4G, TDA9886TS, Tuner: TDQ-6FT / W126H \ ROH
Invertor: RSAG7.820.2124 / ROH VER.B, QZ9938GN
PSU: RSAG7.820.2123 / ROH, OB2269AP, FQPF3N80, 33262PCSZ, TF10N60
Remote control: EN-31603R
Additional technical information about the panel:
Brand: LG Display
Model: LC420WUE-SCV1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering), CIE1931 72%
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: EEFL Without Driver
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V
ROLSEN RL-42A09105F TV with LCD LC420WUE, 42 "(107 cm) diagonal, 16: 9 format. Screen brightness of 500 cd / m² is backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 200,000: 1 is provided by special operation control illumination 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 decomposition according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog PAL systems, SECAM, NTSC Graphic processing and digital signal shaping is carried out in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, WMA, MPEG4, 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 x2, component, SCART, RGB, VGA, HDMI x2, USB. 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, 1280x1024.
The power consumed by the TV in operating mode from the network is 150 watts.
Dimensions: with stand 1020x700x285 mm, without stand 1020x651x106 mm.
TV weight: 18.5 kg.
Attention! ROLSEN RL-42A09105F LCD TV panel LC420WUE (SC) (V1) is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!