DAEWOO
Model: DLP-32C1
Chassis / Version: SL-223P (MP)
Panel: LTA320WT-LF2
T-CON: 320WSC4LV5.8
Inverter (backlight): INVFT320A Rev1.0
PWM Inverter: BD9882F (16), A358 (8)
MOSFET Inverter: AP4525GEH
Trans Inverter: IT-133-06AA
Power Supply (PSU): FEL-3237A
PWM Power: L6598 (PWM Resonant 16pin), A6151 (Standby DIP-8), L6561 (PFC)
MainBoard: 4859813793_03 SL-223P (MP)
IC MainBoard: SVP-PX66, MSP4610K D6, M30620SPGP, STA515W
Tuner: FQ1216ME / I H-5
Control: IR: PW202
Technical Specifications DLP-32C1
DAEWOO DLP-32C1
General recommendations for repairing TV LCD
Possible malfunctions
- DAEWOO DLP-32C1 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.
In such cases, the FEL-3237A power supply is usually faulty. It is necessary to measure the secondary output supply voltage, 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.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM chip L6598 (PWM Resonant 16pin), A6151 (Standby DIP-8), L6561 (PFC) can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
If in diagnosing a malfunction, it is necessary to disable 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 their completion it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SVP-PX66, MSP4610K D6, M30620SPGP, STA515W. BGA chip malfunctions are usually easy to detect by warming up.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the tuner FQ1216ME / I H-5. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
It should be remembered! Attempts to independently repair the DAEWOO DLP-32C1 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
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 ------------------> INVFT320A INVFT320A
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
The DLP-32C1 TV is equipped with a FEL-3237A power module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the L6561 PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes, when the reactance determines the charge current (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the DAEWOO DLP-32C1 device:
Installed matrix (LCD panel) LTA320WT-LF2.
The matrix control uses the Timing Controller (T-CON) 320WSC4LV5.8.
The INVFT320A inverter is used to power the backlight, it is controlled by the BD9882F (16), A358 (8) PWM controller. The transformer IT-133-06AA is installed in the inverter converter. As power elements of the inverter, keys of the AP4525GEH type are used.
The necessary supply voltages for all nodes of the DAEWOO DLP-32C1 TV are generated by the FEL-3237A power module or its analogs using L6598 (PWM Resonant 16pin), A6151 (Standby DIP-8), L6561 (PFC) microcircuits.
MainBoard - the main board (motherboard) is a module 4859813793_03, using microchips SVP-PX66, MSP4610K D6, M30620SPGP, STA515W and others.
The FQ1216ME / I H-5 tuner provides TV 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-32C1.
Briefly from the TV: LCD, 32 ", 1366x768, 720p HD, there is PIP, sound: 20 watts.
The composition uses MainBoard 4859813793_03 SL-223P (MP) and LCD panel (matrix) LTA320WT-LF2.
Power Supply Unit (PSU) FEL-3237A Power Supply.
Technical description
DAEWOO DLP-32C1 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. 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 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, 1280x1024, 1360x768.
The power consumed by the TV in the operating mode from the network is 160 watts.
Overall dimensions: With a support 608x456x215 mm, Without a support 806x575x114 mm.
Attention! The LTA320WT-LF2 panel of a DAEWOO DLP-32C1 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen surface to prevent permanent damage to the LCD panel.