Technical description and composition of the ROLSEN RL-40E1004F TV, panel type and modules used. The composition of the modules.ROLSEN LED
Model: RL-40E1004F
Chassis / Version: RSAG7.820.4833
Panel: HE400GF-B31 / S12
T-CON: 400HR42S4LV0A; LQF6041T0B-01, MAX9695, SM4109, 24C64WP
LED driver (backlight): integrated into PSU
PWM LED driver: AP3843CP
MOSFET LED driver: CS1N60
Power Supply (PSU): RSAG7.820.4737 / ROH TU25C126-1
PWM Power: NCP1271A, STK0765
MainBoard: RSAG7.820.4833 / ROH
IC MainBoard: SPI Flash: MX25L3206E, EEPROM: FM24C32A, Audio: TAS5707
Tuner: HFT / 96T116H / ROH
RL-40E1004F Specifications
ROLSEN RL-40E1004F
General recommendations for TV LCD LED repair
Possible malfunctions
- ROLSEN RL-40E1004F 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.
Often in such cases the power supply module RSAG7.820.4737 is faulty. It is necessary to measure its output supply voltages, and if they are absent, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
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.
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) NCP1271A, STK0765, 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 picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
The backlight of the matrix (LED panel) is usually faulty in these cases. Most often, the reason for this is a break in the LEDs, or poor contact in the connectors of the brackets, less often the LED driver may be faulty.
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, the indicator signals standby or operating mode, or blinks.
Repair or diagnostics of the RSAG7.820.4833 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). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - SPI Flash: MX25L3206E, EEPROM: FM24C32A, Audio: TAS5707. In cases where a BGA processor is used, its malfunction is usually detected by a local warm-up method.
Before replacing the HFT / 96T116H / ROH tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Remember! Attempts to self-repair the ROLSEN RL-40E1004F TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-40E1004F, Main: RSAG7.820.4833 /ROH, Panel: HE400GF-B31/S12
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> RSAG7.820.4737 Power supply
The appearance of the MainBoard RSAG7.820.4833 is shown in the figure below:RSAG7.820.4833
External view of the power supply
The main features of the ROLSEN RL-40E1004F device:
Installed matrix (LED panel) HE400GF-B31 / S12.
Matrix control uses Timing Controller (T-CON) 400HR42S4LV0A ;.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the AP3843CP PWM controller. The keys of the CS1N60 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-40E1004F TV is carried out by the RSAG7.820.4737 power module, or its analogs using NCP1271A, STK0765 microcircuits.
MainBoard - the main board (motherboard) is an RSAG7.820.4833 module, using SPI Flash chips: MX25L3206E, EEPROM: FM24C32A, Audio: TAS5707 and others.
The HFT / 96T116H / ROH tuner provides reception of television programs and tuning to channels.
ROLSEN RL-40E1004F TV with LCD HE400GF-B31 / S12, diagonal 40 "(102 cm) in 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 40,000: 1 is achieved by special control The LED panel of this TV is equipped with an edge LED edge illumination.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). 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, 1080p standards.Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, MKV , JPEG.
Speaker power 14 W (2x7 W) is provided by two speakers. Uses NICAM stereo signal 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, 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, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 70 watts.
Dimensions: with stand 921x607x225 mm, without stand 921x552x57 mm.
TV weight: 10.7 kg.
Attention! The HE400GF-B31 / S12 panel of the ROLSEN RL-40E1004F 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!
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.