Technical description and composition of the DIGITAL DL-15S10 TV, type of panel and applicable modules. The composition of the modules.Digital
Model: DL-15S10
Chassis / Version: MST182VG V5.0
Panel: LQ150X1LGC2
Lamp backlight: 4 Lamp CCFL
Inverter (backlight): LK-IN220417A (W)
PWM Inverter: OB3302CP
Power Supply (PSU): Adapter 12V
MainBoard: MST182VG V5.0
IC MainBoard: SPI Flash: cFeon 25Q32B; SOUND: UTC1517P;
Tuner: CDT-3SP5I2-36
Technical Specifications DL-15S10
DIGITAL DL-15S10
General recommendations for repairing TV LCD
Possible malfunctions
- The DIGITAL DL-15S10 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.
In most of these cases, the main switching power supply is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary first of all to check the power switches and rectifier diodes for a possible partial or complete breakdown.
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, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and 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.
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 they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the B.PT361G 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). The board is repaired and the NT68625MFG-128, 24C16, SC7313S, TEA2025B, TB1334FG microchips are replaced with the necessary equipment and the corresponding components. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner ET-6T1E-LF-108W-A 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.
TV users and owners must remember that attempts to self-repair a DIGITAL DL-15S10 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH -----------> Digital DL-15S10, Main: MST182VG V5.0, Panel: LQ150X1LGC2
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> LK-IN220417A
There is a version of DIGITAL DL-15S10 with a panel: LTA150XH-L06, MainBoard: B.PT361G, consisting of lanes: Tuner: ET-6T1E-LF-108W-A, processor NT68625MFG-128, EEPROM 24C16, Audio TEA2025B
Repair MainBoard
The appearance of the MainBoard MST182VG is shown in the figure below:
MST182VG
MST182VG can be used in TVs:
Digital DL-15S10 (Panel LQ150X1LGC2), HYUNDAI H3260 (Panel T315XW07 V2), HYUNDAI H-LCD4200 (Panel T400HW04 V.0 FHD).
Main features of the DIGITAL DL-15S10 device:
Installed matrix (LCD panel) LQ150X1LGC2.
To power the backlight, an inverter LK-IN220417A is used, it is controlled by the PWM controller OB3302CP.
To power all internal nodes of the DIGITAL DL-15S10 TV, an external adapter 12V type is used.
MainBoard - the main board (motherboard) is an MST182VG module using SPI Flash chips: cFeon 25Q32B; SOUND: UTC1517P; and others.
The tuner CDT-3SP5I2-36 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SHARP
Model: LQ150X1LGC2
Type: a-Si TFT-LCD, Panel
Diagonal size: 15.0 inch
Resolution: 1024x768, XGA
Display Mode: TN, Normally White, Transmissive
Active Area: 304.1x228.1 mm
Brightness: 400 cd / m²
Display Colors: 16.7M (6-bit + Hi-FRC)
Lamp Type: 4 pcs CCFL
Signal Interface: LVDS (1 ch, 8-bit)
