Technical description and composition of the DAEWOO DLP-32C1F TV, type of panel and applicable modules. The composition of the modules.DAEWOO
Model: DLP-32C1F
Chassis / Version: SL-500P
Panel: LTA320AB0
Lamp backlight: 12 Lamp CCFL
T-CON: 320AB02CP2LV 0.
Inverter (backlight): SSI320A12 (INV32S12S)
PWM Inverter: OZ9966SN
MOSFET Inverter: AOD486A
Trans Inverter: LT-32VE
Power Supply (PSU): FEL-3226H Ver-01
PWM Power: L6562 (PFC), A6252 (Stb), L6598
MOSFET Power: P13NK60ZFP (PFC), P6NK60ZFP
MainBoard: DLP-32C6
IC MainBoard: MST96889LD-L, TDA9886T, TDA8931T, 24C64A
Tuner: UV1316A
Appearance
DAEWOO DLP-32C1F
General recommendations for repairing TV LCD
Possible manifestations of defects
- The DAEWOO DLP-32C1F TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
With such manifestations, in some cases, the FEL-3226H power module is faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (P13NK60ZFP, P6NK60ZFP) and rectifier diodes for possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) A6252, L6598 (PWM Resonant 16pin), L6562 (PFC), if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, there is sound, all other functions of the TV work. When turned on, the image may sometimes appear for a second.
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 4859814993 motherboard should begin by checking the stabilizers and power converters needed to power the chips 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 chips MST96889LD-L, TDA9886T, TDA8931T, 24C64A and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before replacing the UV1316A tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention! For users and owners of DLP-32C1F televisions who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
Repair MainBoard
The appearance of the MainBoard DLP-32C6 is shown in the figure below:
DLP-32C6
The appearance of the power supply
Main features of the DAEWOO DLP-32C1F device:
Installed matrix (LCD panel) LTA320AB0.
The matrix control uses the Timing Controller (T-CON) 320AB02CP2LV.
The SSI320A12 inverter is used to power the backlight, controlled by the OZ9966SN PWM controller. A transformer LT-32VE is installed in the inverter converter. As power elements of the inverter, keys of the AOD486A type are used.
The necessary supply voltages for all nodes of the DAEWOO DLP-32C1F TV are generated by the FEL-3226H power module or its analogs using L6562 (PFC), A6252 (Stb), L6598 microcircuits and power switches of the P13NK60ZFP (PFC), P6NK60ZFP type.
MainBoard - the main board (motherboard) is a DLP-32C6 module, using microcircuits MST96889LD-L, TDA9886T, TDA8931T, 24C64A and others.
The UV1316A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AB02-W03
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 14%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 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), 41 pins
Voltage: 12.0V