Technical description and composition of the ROLSEN RL-42D60 TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-42D60
Chassis / Version: PLYM01
Panel: LC420WX5 (SL) (A1)
Lamp backlight: 18 Lamp CCFL
T-CON: 6870C-0113A
Inverter (backlight): 6632L-0371A, 6632L-0372A
Power Supply (PSU): RHSM-S0015C RHPB-10302
MainBoard: RHPB-10294D
IC MainBoard: 7252LF, M30300SAGP, STV8257DSX, A29040BL-70F,
Tuner: TAUM-W101D
RL-42D60 Specifications
ROLSEN RL-42D60
General recommendations for TV LCD repair
Possible malfunctions
- ROLSEN RL-42D60 TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
Most likely, in this case, the main switching power supply (SMPS) RHSM-S0015C is faulty. Its output voltages should be measured, and if they are absent, check the serviceability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short-circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM regulator, in frequency-setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) are usually checked by replacing them with new ones, or knowingly working.
- There is no picture, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
These manifestations can be triggered by the power module, or by defects in the inverter, as well as by skewed currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, the power switches in its converter should be ringed for breakdown and the secondary windings of the transformers for an open circuit.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- 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 RHPB-10294D 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). Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing elements 7252LF, M30300SAGP, STV8257DSX, A29040BL-70F requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
Before changing the TAUM-W101D tuner, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding tuner terminals and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be monitored with an oscilloscope
Remember! Attempts to self-repair the ROLSEN RL-42D60 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 -----------> A29040, 24C32 ROLSEN RL-42D60, Main: RHPB-10294D, Panel: LC420WX5 (SL)(A1)
The appearance of the MainBoard RHPB-10294D is shown in the figure below:RHPB-10294D
The main features of the ROLSEN RL-42D60 device:
Installed matrix (LCD panel) LC420WX5 (SL) (A1).
Matrix control uses a Timing Controller (T-CON) 6870C-0113A.
The inverter 6632L-0371A is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-42D60 TV is carried out by the RHSM-S0015C power module, or its analogs.
MainBoard - the main board (motherboard) is an RHPB-10294D module, using chips 7252LF, M30300SAGP, STV8257DSX, A29040BL-70F, and others.
The TAUM-W101D tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC420WX5-SLA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.25x523.01 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit)
Response Time: 10 (Tr Td); 5 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
ROLSEN RL-42D60 TV with LCD LC420WX5, 42 "(106 cm) diagonal in 16: 9 format. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 1000: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i.
Speaker power 20 W (2x10 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, audio x3, S-Video, component, SCART x2, RGB, VGA, DVI HDCP. 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, 1360x768.
TV weight: 38.5 kg.
Attention! ROLSEN RL-42D60 LCD TV panel LC420WX5 (SL) (A1) is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!