Technical description and composition of the DAEWOO DLP-32C2 TV, panel type and applicable modules. The composition of the modules.DAEWOO
Model: DLP-32C2
Chassis / Version: SL-130P DLP-32C3
Panel: LTA320WT-LF2 // LTA 320 WT-L06
T-CON: 320WSC4LV5; ic LRX4222T3
Inverter (backlight): INVERT320A Rev1.0
PWM Inverter: BD9882F (20)
MOSFET Inverter: 4525GEH
Trans Inverter: IT-133 06AQ
Power Supply (PSU): FEL-3237A VER01
PWM Power: L6598 (PWM Resonant 16pin), L6561 (PFC), STR-A6159 (Standby)
MainBoard: 4859813793_03 SL223P (MP)
IC MainBoard: VP-PX66, MSP4610K D6, M30620SPGP, STA515W
Tuner: UV1316 / A
Technical Specifications DLP-32C2
DAEWOO DLP-32C2
General recommendations for repairing TV LCD
Possible manifestations of defects
- DAEWOO DLP-32C2 TV does not turn on at all. The control lights do not light or flash. On the remote control and the buttons on the control panel does not respond.
With such manifestations, a malfunction is most likely to be detected in the FEL-3237A power supply module. It is necessary to measure its secondary output voltages, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key can be PWM (PWM) L6598 (PWM Resonant 16pin), L6561 (PFC), STR-A6159 (Standby). It is checked only by replacement with a known good one.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the 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, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 4859813793_03 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its VP-PX66, MSP4610K D6, M30620SPGP, STA515W chips and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If the TV works normally with external devices but does not tune into television channels, the UV1316 / A tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
TV users and owners need to remember that attempts to self-repair a DAEWOO DLP-32C2 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> DAEWOO DLP-26C2, DLP-26C3, DLP-32C1, DLP-32C2, DLP-32C3, DLP-37C3, DLP-42C1 chassis SL-223P
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> FEL-3237A
The appearance of MainBoard 4859813793_03 is shown in the figure below:4859813793_03
4859813793_03 can be used in TVs:
DAEWOO DLP-32C1 (Panel LTA320WT-LF2), DAEWOO DLP-32C2 (Panel LTA320WT-LF2), DAEWOO DLP-32C3 (Panel LTA320WT-LF2).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the FEL-3237A module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the L6561 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the DAEWOO DLP-32C2 device:
Installed matrix (LCD panel) LTA320WT-LF2 or LTA 320 WT-L06.
The matrix control uses the Timing Controller (T-CON) 320WSC4LV5 ;.
The INVERT320A inverter is used to power the backlight, controlled by the BD9882F PWM controller (20). The transformer IT-133 06AQ is installed in the inverter converter. As power elements of the inverter, keys of type 4525GEH are used.
The necessary supply voltages for all nodes of the DAEWOO DLP-32C2 TV are generated by the FEL-3237A power module or its analogs using L6598 (PWM Resonant 16pin), L6561 (PFC), STR-A6159 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 4859813793_03, using chips VP-PX66, MSP4610K D6, M30620SPGP, STA515W and others.
The UV1316 / A tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320WT-LF2
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: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: FFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: DAEWOO, Model: DLP-32C2.
Briefly from the TV: LCD, 32 ", 1366x768, 720p HD, there is PIP, sound: 20 watts.
The composition uses MainBoard 4859813793_03 SL223P (MP) and an LCD panel (matrix) LTA320WT-LF2, or LTA 320 WT-L06.
Power Supply Unit (PSU) FEL-3237A VER01 Power Supply.
DAEWOO DLP-32C2 LCD TV with LTA320WT-LF2 LCD display, 32 "(81 cm) diagonal size in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) lamps. The ratio of maximum brightness to minimum ( contrast ratio) is 3000: 1. You can 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 digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the sound speaker system 20 W (2x10 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, SCART x2, RGB, VGA, HDMI. A VGA (D-Sub 15) connector is used to connect a computer or laptop. This interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Dimensions: With stand 608x456x215 mm, Without stand 944x529x115 mm.
Attention! The LTA320WT-LF2 panel of a DAEWOO DLP-32C2 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
