Technical description and composition of the ROLSEN RL-32D40SR TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32D40SR
Panel: LC320W01 (SL) (01)
Inverter (backlight): 6632L-021A KLS-EE32CI-M rev: 08
PWM Inverter: OZ9981GN
Power Supply (PSU): DMSM-S0007D
PWM Power: VIPER22A (Standby), L6562D (PFC), L6598D (PWM Resonant 16pin)
MOSFET Power: P11NM60, W20NM60
MainBoard: PHPB-10250D PLZM01 RHMA-M0146A
Appearance
ROLSEN RL-32D40SR
General recommendations for TV LCD repair
ROLSEN with chassis, like other TVs, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Based on visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before taking the necessary measurements. In some cases, defective elements are visible with the naked eye, for example, charred resistors or swollen sintered capacitors, or electrolytic ones in rectifier filters. The formed ring cracks in the soldering of the terminals of transformers or heating circuit elements are also frequent sources of many malfunctions with a variety of external manifestations.
Sometimes the ROLSEN RL-32D40SR TV simply does not turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the general power supply module DMSM-S0007. If it works, check the processor batteries on the SSB (Main Board). When repairing a power supply, it is advisable to start diagnostics with checking the mains fuse and electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a break in the fuse, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply unit. First of all, it is necessary to check the diodes of the mains voltage rectifier bridge and the power switch (s) of the RSS100 NO3 converter.
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 BD9766FV PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If the ROLSEN RL-32D40SR 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 condition. 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.
If the PHPB-10250D PLZM01 RHMA-M0146A motherboard is faulty, first of all you need to check all the 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-32D40SR 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 SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Rolsen RL-32D40D, RL-32D50D, RL-32D60D
External view of the power supply:
The main features of the ROLSEN RL-32D40SR device:
Installed matrix (LCD panel) LC320W01 (SL) (01).
To power the backlight lamps, an inverter 6632L-021A is used, controlled by the OZ9981GN PWM controller.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32D40SR TV is carried out by the DMSM-S0007D power module, or its analogs using the VIPER22A (Standby), L6562D (PFC), L6598D (PWM Resonant 16pin) and power switches of the P11NM60, W20NM60 type.
MainBoard - The main board (motherboard) is a PHPB-10250D ; PLZM01 module.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320W01-SL01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit), CIE1931 73%
Response Time: 8/10 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V