Technical description and composition of the ROLSEN RL-37D40D TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-37D40D
Chassis/Version: PLYM01 LQCM07300127
Panel: LC370WX1
Inverter (backlight): 6632L-0197D LC370WX1(Master) YPNL-T010H REV05, 6632L-0198D LC370WX1(Slave)
Power Supply (PSU): RHSM-S1012F
MainBoard: PLYM01 RHMA-M0095N CODE:RHPB-10294D REV04
IC MainBoard: 7252LF, M30300SAGP, STV8257DSX, A29040BL-70F
Đ¢uner: TAUM-W101D
RL-37D40D Specifications
ROLSEN RL-37D40D
General recommendations for TV LCD repair
Possible manifestations of defects
- The ROLSEN RL-37D40D TV does not turn on, does not respond to the remote control and control panel buttons, does not light or blink indicators.
With such manifestations, a malfunction is most likely found in the RHSM-S1012F power module. Its output voltages should be measured and, in their absence, the power switches and rectifier diodes should be checked for the probability of a short circuit in the converters.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work in an emergency in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse often breaks.
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 the 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 image, there is sound, it reacts to the remote control. Or, immediately after switching on for a second, the image may appear and immediately disappear.
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. If all the electrolytic capacitors of the filter for the power supply of the inverter are in good working order, you should make sure that the lamps are in good condition, then you need to check the converter keys and the secondary windings of the transformers.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the PLYM01 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 - 7252LF, M30300SAGP, STV8257DSX, A29040BL-70F. In cases where a BGA processor is used, its malfunction is usually detected by a local 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 data exchange between the tuner and the processor can be monitored with an oscilloscope
For the owners of the RL-37D40D TV, we recommend that you contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
Additional MainBoard RepairThe appearance of the MainBoard PLYM01 is shown in the figure below:
PLYM01
The main features of the ROLSEN RL-37D40D device:
Installed matrix (LCD panel) LC370WX1.
The inverter 6632L-0197D is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-37D40D TV is carried out by the RHSM-S1012F power module, or its analogs.
MainBoard - the main board (motherboard) is a PLYM01 module, using 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: LC370WX1-SLC2
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 819.6x460.8 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit)
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 20 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
ROLSEN RL-37D40D LCD TV LC370WX1, 37 "(94 cm) 16: 9 format diagonal. Screen brightness of 500 cd / m² is provided by CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 800: 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). The 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 Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, JPEG.
Speaker power 30 W (2x15 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, 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.
Overall dimensions: 960x730x320 mm.
TV weight: 31 kg.
Attention! ROLSEN RL-37D40D LCD TV panel LC370WX1 is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!