Technical description and composition of the DAEWOO DSL-15D1T TV, panel type and applicable modules. The composition of the modules.DAEWOO
Model: DSL-15D1T
Chassis / Version: 3912C // SL-100P
Panel: SVA150XG10TB // LC151X01-C3
Inverter (backlight): P1542E31-VER5 // DS-1007NF
PWM Inverter: BIT3105
MOSFET Inverter: FDS8958A
Power Supply (PSU): 2956C // Adapter 12V
PWM Power: ICE2A165 (Standby), 1M0680
MainBoard: 3912C // SL-100P
IC MainBoard: MSP34156 B8 V3, W39L040A, 24C32, AP1534, APM9435, TDA1517P
Tuner: M09WPP-1P-E (TCL08050515E 07 00)
Technical Specifications DSL-15D1T
DAEWOO DSL-15D1T
General recommendations for repairing TV LCD
Possible manifestations of defects
- DAEWOO DSL-15D1T does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Failure in such cases should be sought in the adapter power supply circuits.
The owner of the TV can purchase an external power supply unit such as Adapter and repairing it is not always advisable. In any case, the simplest typical defects characteristic of most IIP schemes can be easily detected and eliminated after opening. 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 ICE2A165 (Standby), 1M0680 may 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 inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
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 turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the SL-100P 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Check or replace MCU elements: PW166B-10T, SAA7118E, SAA5264, DS90C385; Sound processor MSP3410G; Audio: LA4635 requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before changing the tuner TCPQ9091PD27E (SEM), if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
It should be remembered! Attempts to self-repair a DAEWOO DSL-15D1T 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 DSL-15D1T, DSL-17W1T chassis SL-100P
FIRMWARE FOR SPI FLASH -----------> DAEWOO DSL-15D1T, Main: 3912C, Panel: SVA150XG10TB
DAEWOO DSL-15D1T - Panel: SVA150XG10TB Rev:A;
MainBoard: 3912C V2.2 - TUNER: M09WPP-1P-E (TCL08050515E 07 00), MSP34156 B8 V3, W39L040A, 24C32, AP1534, APM9435, TDA1517P;
PSU: 2956C Ver 2.0 - CM0765R;
Inverter: 3719C V4,0 - PWM Inverter: BIT3713; MOSFET: 4511GM
The appearance of the MainBoard 3912C and voltage measurements at the test points are shown in the figure below:3912C
The appearance of the power supply
Main features of the DAEWOO DSL-15D1T device:
Installed matrix (LCD panel) SVA150XG10TB or LC151X01-C3.
To power the backlight, an inverter P1542E31-VER5 is used, it is controlled by the BIT3105 PWM controller. As power elements of the inverter, keys of the FDS8958A type are used.
To power all the internal components of the DAEWOO DSL-15D1T TV, an external source of type 2956C // Adapter 12V is used with the use of ICE2A165 (Standby), 1M0680 microcircuits.
MainBoard - the main board (motherboard) is a 3912C module, using microchips MSP34156 B8 V3, W39L040A, 24C32, AP1534, APM9435, TDA1517P and others.
The tuner M09WPP-1P-E (TCL08050515E 07 00) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SVA-NEC
Model: SVA150XG10TB
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.128x228.096 mm
Brightness: 250 cd / m²
Contrast Ratio: 600: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 60%
Response Time: 2/6 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 20 pins
Voltage: 3.3V
Brand: DAEWOO, Model: DSL-15D1T.
Short from TV: LCD, 15 ", 1024x768, sound: 4 watts.
The composition uses MainBoard 3912C, or SL-100P and an LCD panel (matrix) SVA150XG10TB, or LC151X01-C3.
Power supply unit (PSU) 2956C, or Adapter 12V Power Supply.
DAEWOO DSL-15D1T LCD TV with SVA150XG10TB LCD display, 15 "diagonal size 4: 3 format. 400 cd / m² screen brightness is provided by CCFL (EEFL) lamps. The ratio of maximum brightness to minimum (contrast) is 350: 1 The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC.
The power of the sound system 4 W (2x2W) 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, component, SCART, RGB, VGA.
Dimensions: With stand 608x456x215 mm, Without stand 944x529x115 mm.
Attention! The SVA150XG10TB panel of the DAEWOO DSL-15D1T 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!