Technical description and composition of the DAEWOO DLP-20D7 TV, panel type and applicable modules. The composition of the modules.DAEWOO
Model: DLP-20D7
Chassis / Version: SL-130P
Panel: LC201V02
T-CON: DTML015,01DAL-0013A
Inverter (backlight): integrated into PSU
PWM Inverter: STR-H2003
Power Supply (PSU): IPB-6015N01
PWM Power: STR-W6253
MainBoard: SL-130P Main
IC MainBoard: TDA15521E / N1F81 / SE6533.1, 24C32WP, 39VF020 / 70-4C-WHE, TDA9178T, DTC34LF86L, HC4052M
Tuner: UV316 / A I H-4
Control: R-49C10
Technical Specifications DLP-20D7
DAEWOO DLP-20D7
General recommendations for repairing TV LCD
Possible manifestations of defects
- The DAEWOO DLP-20D7 TV does not turn on and does not show any signs of operability at all. There is no reaction to either the remote control or the front panel control buttons.
Most often, with such manifestations, the main power module IPB-6015N01 is found to be faulty. It is necessary to measure the secondary output 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 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 may be PWM (PWM) STR-W6253. It is checked only by replacement with a known good one.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a 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, inverter protection must be disabled. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the SL-130P 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). Board repair and chip replacement TDA15521E / N1F81 / SE6533.1, 24C32WP, 39VF020 / 70-4C-WHE, TDA9178T, DTC34LF86L, HC4052M are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
The malfunction of the UV316 / A I H-4 tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Owners and users of the DAEWOO DLP-20D7 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!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> DAEWOO DLP-20J1, DLP-20D7, DLP-20W2 chassis SL-130P
The appearance of the MainBoard SL-130P is shown in the figure below:SL-130P
SL-130P can be used in TVs:
DAEWOO DLP-20D7 (Panel LC201V02), DAEWOO DLP-20J3 (Panel LC201V02 (SD)(A3)), DAEWOO DLP-20J1 (Panel LC201V02-SDA3).
The appearance of the power supply
Main features of the DAEWOO DLP-20D7 device:
Installed matrix (LCD panel) LC201V02.
The matrix control uses the Timing Controller (T-CON) DTML01501DAL-0013A.
To power the backlight, a converter is used, combined with a power supply, controlled by the PWM controller STR-H2003.
The formation of the necessary supply voltages for all nodes of the DAEWOO DLP-20D7 TV is carried out by the IPB-6015N01 power module or its analogs using STR-W6253 microcircuits.
MainBoard - the main board (motherboard) is a SL-130P module using TDA15521E / N1F81 / SE6533.1, 24C32WP, 39VF020 / 70-4C-WHE, TDA9178T, DTC34LF86L, HC4052M and others.
The UV316 / A I H-4 tuner allows you to receive television programs and tune to channels.
Information from an alternative source:
DAEWOO DLP-20D7 Chassis SL-130P
Panel Type (Matrix): SVA201VG01TB REV: C
Motherboard: 4859805896-02, TDA15521E / N1H81, SST39VF020, 24C32WP, HC4052M, LA42032, Tuner: UV1316 / A I H-4,
T-con :, KE456U2610, IR3EIIMI, SH5023, PSU & Inverter: IPB6015N01PD (or DP), STR-W6253, STR-H2003, APM4546 x4, EFD1221B x6
Remote control: R-49С07,
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC201V02-SDA3
Type: a-Si TFT-LCD, Panel
Diagonal size: 20.1 inch
Resolution: 640x480, VGA
Display Mode: IPS, Normally Black, Transmissive
Active Area: 408x306 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit)
Response Time: 12/13 (Tr / Td)
Frequency: 60Hz
Lamp Type: 6 pcs CCFL Without Driver
Signal Interface: CMOS (1 ch, 8-bit), 41 pins
Voltage: 12.0V
Brand: DAEWOO, Model: DLP-20D7.
Briefly from the TV: LCD, 20 ", 640x480, sound: 4 watts.
The composition uses MainBoard SL-130P Main and LCD-panel (matrix) LC201V02.
Power Supply Unit (PSU) IPB-6015N01 Power Supply.
LCD TV DAEWOO DLP-20D7 with LCD display LC201V02, diagonal size 20 "in 4: 3 format. The brightness of the screen is 500 cd / m² with backlight CCFL (EEFL) lamps. The ratio of maximum brightness to minimum (contrast) is 700: 1 The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standards 480i, 480p, 576i, 576p.
The power of the sound system 4 W (2x2 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, S-Video, SCART, RGB. An output for connecting headphones is provided. A VGA (D-Sub 15) connector is used to connect a computer or laptop. This interface supports resolutions: 640x480, 800x600.
Overall dimensions: With a support 608x456x215 mm, Without a support 514x460x85 mm.
The mass of the TV: 8.35 kg.
Attention! The DAEWOO DLP-20D7 LCD TV panel LC201V02 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
