Technical description and composition of the DAEWOO DSL-22V1WC TV, panel type and applicable modules. The composition of the modules.DAEWOO
Model: DSL-22V1WC
Chassis / Version: HK-HDMI-MSTV-V5.1
Panel: M220Z1-L03 Rev. C1
Inverter (backlight): DP-04-220401
Power Supply (PSU): Adapter + 12V, 4A
MainBoard: HK-HDMI-MSTV-V5.1
Tuner: TNJ9355-CF
Technical Specifications DSL-22V1WC
DAEWOO DSL-22V1WC
General recommendations for repairing TV LCD
Possible manifestations of defects
- DAEWOO DSL-22V1WC 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.
Most often, with such manifestations, the main adapter power module is found to be faulty.
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 output voltages in the secondary circuits, 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 switch may be PWM (PWM). 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.
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.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the HK-HDMI-MSTV-V5.1 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).
If the TV works normally with external devices but does not tune into television channels, the TNJ9355-CF 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.
It should be remembered! Attempts to independently repair the DAEWOO DSL-22V1WC 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!
Repair MainBoardThe 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).
Main features of the DAEWOO DSL-22V1WC device:
Installed matrix (LCD panel) M220Z1-L03 Rev. C1.
The inverter DP-04-220401 is used to power the backlight.
To power all the internal components of the DAEWOO DSL-22V1WC TV, an external adapter + 12V, 4A type source is used.
MainBoard - the main board (motherboard) is a HK-HDMI-MSTV-V5.1 module.
The TNJ9355-CF tuner provides TV reception and channel tuning.
Information from an alternative source:
Daewoo DSL-22V1WC
Panel Type (Matrix): M220Z1-L03 Rev. C1
Motherboard: HK-HDMI-MSTV-V5.1, Tuner: TNJ9355-CF,
Invertor: DP-04-220401,
PSU: External, + 12V, 4A
Additional technical information about the panel:
Brand: CMO
Model: M220Z1-L03
Type: a-Si TFT-LCD, Panel
Diagonal size: 22.0 inch
Resolution: 1680x1050, WSXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 473.76x296.1 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: DAEWOO, Model: DSL-22V1WC.
Short from TV: LCD, built-in DVD player, 22 ", 1680x1050, 720p HD.
The composition uses MainBoard HK-HDMI-MSTV-V5.1 and the LCD panel (matrix) M220Z1-L03 Rev. C1.
Power supply unit external Adapter + 12V, 4A.
DAEWOO DSL-22V1WC LCD TV with M220Z1-L03 LCD display, diagonal size 22 "(55 cm) 16:10 format. Screen brightness 300 cd / m² is provided by CCFL (EEFL) lamps. The ratio of maximum brightness to minimum ( contrast ratio) is 700: 1. You can view images in high quality HD at a resolution of 1680x1050 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. Supported media file formats: MP3, MPEG4, VideoCD, SVCD, JPEG. Stereo sound is realized by two built-in speakers. NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, RGB, VGA, USB. A VGA (D-Sub 15) connector is used to connect a computer or laptop. This interface supports resolutions: 640x480, 800x600, 1024x768.
Overall dimensions: With stand 1033x714x320 mm, Without stand 1033x650x120 mm.
Attention! The DAEWOO DSL-22V1WC LCD TV panel M220Z1-L03 Rev. C1 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!