Technical description and composition of the ROLSEN RL-32D60D TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32D60D
Panel: LTA320WT-L05
Power Supply (PSU): RHSM-S1007E PB-3200 RHPB-10240C
PWM Power: L6598 (PWM), L6562D (PFC), VIPer22A (Standby) + Trans DM-2218A2
MOSFET Power: 11NM60, 20NM60 (PFC)
MainBoard: RLHM01-01 Rev03 RHPB-10282C RHMA-M00691
IC MainBoard: MST5151A-LF, 2576-3.3DD, TEA6422, DVD LS-48 RHPB-10289F
Tuner: TECH2949PG40B (D)
RL-32D60D Specifications
ROLSEN RL-32D60D
General recommendations for TV LCD repair
Repair of electronic equipment usually begins with its external examination and diagnosis of a malfunction. In this case, you should inspect all internal chassis elements, as well as external hull ones. 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.
If the power supply module PB-3200 RHPB-10240C RHSM-S1007E malfunctions, external manifestations may be different, for example, ROLSEN RL-32D60D does not turn on at all and there is no indication of control lamps on the front panel. With the same symptoms, the regulator (converter) of the control processor power supply may be faulty. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (SMPS) it does not fail by itself without reasons that should be looked for by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If ROLSEN RL-32D60D has no picture, but there is sound and the TV is controlled from the remote control, a malfunction in the display backlight units is likely. Lamps or power converter - inverter may be faulty. Often in such cases, when the TV is turned on, an image appears and immediately disappears. First of all, it is necessary to make sure that the electrolytic capacitors of the rectifier filter supplying the inverter are in good working order, and check the LCD lamps by connecting external and known good diagnostics to the connectors. When disabling the inverter protection (to enable diagnostics), special care must be taken due to the risk of failure of the power components. After the completion of all repair work, it is imperative to restore the protection circuits for the full and safe further operation of the TV by the user.
Repair or diagnostics of the motherboard RLHM01-01 Rev03 RHPB-10282C RHMA-M00691 should begin with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - MST5151A-LF, 2576-3.3DD, TEA6422, DVD LS-48 RHPB-10289F which may require replacement with new ones. If a BGA processor is installed, there is a possibility that the soldering of the contacts of its pins with the board is broken (detected by warming up).
Owners and users of the ROLSEN RL-32D60D TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Rolsen RL-32D40D, RL-32D50D, RL-32D60D
PDF document available.Schematic Diagrams 6 pages on RL-32D40D, RL-32D50D, RL-32D60D models
Additionally by PSUThe RHSM-S1007E power supply module uses a Power Factor Correction (PFC) circuit to eliminate multiple AC harmonics introduced by the device into the mains. The PFC node is a Step-Up Converter based on the L6562D PWM regulator, which evenly distributes high-frequency pulses of the charging current of the electrolytic capacitor of the mains rectifier filter within a 50Hz period. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the mains frequency), but by the elements of the converter. As a result, the change in the pulse amplitude (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The serviceability of the PFC unit is indicated by the presence of an increased voltage (about + 380V) in operating mode on the capacitor of the mains filter.
External view of the power supply
The main features of the ROLSEN RL-32D60D device:
Installed matrix (LCD panel) LTA320WT-L05.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32D60D TV is carried out by the RHSM-S1007E power supply module, or its analogs using L6598 (PWM), L6562D (PFC), VIPer22A (Standby) + Trans DM-2218A2 power switches and 11NM60 type power switches, 20NM60 (PFC).
MainBoard - the main board (motherboard) is an RLHM01-01 module, using MST5151A-LF, 2576-3.3DD, TEA6422, DVD LS-48 RHPB-10289F and others.
Tuner TECH2949PG40B (D) provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320WT-L05
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
ROLSEN RL-32D60D TV with LCD display LTA320WT-L05, 32 "(81 cm) 16: 9 format diagonal. Screen brightness of 500 cd / m2 backlit by CCFL (EEFL) fluorescent lamps. Contrast as a ratio of maximum brightness to the 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 digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, JPEG.
Speaker power 20 W (2x10 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: 815x660x315 mm.
TV weight: 23 kg.
Attention! ROLSEN RL-32D60D LCD TV panel LTA320WT-L05 is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!