Technical description and composition of the ROLSEN RL-32D40D TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32D40D
Panel: LTA320W2-L14 // LC320W01 (SL) (01) (12v)
Inverter (backlight): KSL-S320BC // M + Sl 6632L-0211A KLS-EE32CI-M / S Rev09
PWM Inverter: // B2901F (14), BD9766FV (28), OZ9981GN (16)
MOSFET Inverter: RSS100N03 (8)
Power Supply (PSU): PS-3200 TF-05 PS-3201 RSHM-S0007D
PWM Power: VIPer22A (Standby), L6562, L6598
MOSFET Power: P11NM60EP, STW20NM60
MainBoard: TF-07
IC MainBoard: VCT49X3R F2,
Tuner: TECH2949PG40B (D) LQCM06300060
RL-32D40D Specifications
ROLSEN RL-32D40D
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. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements begin. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
Malfunctions of the power supply module TF-05 PS-3201 (PS-3200, PS-3202) RSHM-S0007D can be expressed in different ways, for example, ROLSEN RL-32D40D does not turn on at all and the control lamps on its front panel do not light up or blink, everything is missing signs of performance. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it breaks, you should check the power elements of the P11NM60EP transistors, and the rectifier bridge diodes for avalanche (thermal) breakdown.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dry electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible marriage of the PWM chip VIPer22A (8) from the manufacturer.
If ROLSEN RL-32D40D 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. When diagnosing a malfunction of an inverter with disabled protection, special care must be taken, because there is a risk of failure of the power elements of the inverter. After diagnostics, it is imperative to restore the protection circuits for the inverter to operate in normal mode.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or microcircuit power converters and, if necessary, update the software (software). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its VCT49X3R F2 chips, and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
We remind users again! Attempts to repair the ROLSEN RL-32D40D TV without proper qualifications and experience can lead to its complete non-repairability!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Rolsen RL-32D40D, RL-32D50D, RL-32D60D
The main features of the ROLSEN RL-32D40D device:Installed matrix (LCD panel) LTA320W2-L14 or LC320W01 (SL) (01) (12v).
To power the backlight lamps, the KSL-S320BC inverter is used, controlled by the PWM controller // B2901F (14), BD9766FV (28), OZ9981GN (16). Switches of the RSS100N03 type are used as power elements of the inverter (8).
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32D40D TV is carried out by the PS-3200 power supply module, or its analogs using VIPer22A (Standby), L6562, L6598 microcircuits and power switches of the P11NM60EP, STW20NM60 type.
MainBoard - the main board (motherboard) is a TF-07 module, using VCT49X3R F2 microcircuits, and others.
Tuner TECH2949PG40B (D) LQCM06300060 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320W2-L14
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: 450 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
ROLSEN RL-32D40D TV with LCD display LTA320W2-L14, 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 800: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard for 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 takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported media file formats: MP3, MPEG4, VideoCD, SVCD, Picture CD, JPEG Stereo sound is realized by two built-in speakers NICAM stereo signal processing system and Sound Surround function are used ...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, VGA, DVI HDCP. 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, 800x600, 1024x768, 1360x768.
Dimensions: with stand 820x660x310 mm, without stand 820x600x120 mm.
TV weight: 26 kg.
Attention! The LTA320W2-L14 panel of the ROLSEN RL-32D40D LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!