Technical description and composition of the DIGITAL DL-42K6E TV, type of panel and applicable modules. The composition of the modules.Digital
Model: DL-42K6E
Chassis / Version: ME4206L0063
Panel: 42 inch
Mainboard: ME4206L0063
IC MainBoard: VCT49X3F F2 000, MST6151DA-LF, K4D263238I-UC50, 24C32, 24C16, CXA2069Q
Tuner: TAEW-G053D
Appearance
DIGITAL DL-42K6E
General recommendations for repairing TV LCD
Possible malfunctions
- DIGITAL DL-42K6E 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.
In such cases, the fault should be sought first in the power module. It is necessary to measure the secondary output voltages, 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 main 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 the excess of maximum current or voltage values. 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 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 the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
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 operating mode, it does not respond to the remote control.
Repair or diagnostics of the ME4206L0063 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 some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - VCT49X3F F2 000, MST6151DA-LF, K4D263238I-UC50, 24C32, 24C16, CXA2069Q with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before changing the tuner TAEW-G053D, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages that must be measured at 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
Attention to users! Self-repair of a DIGITAL DL-42K6E TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!Display diagonal: 42 inches, TFT LCD, Aspect ratio: 16: 9, 1366х768, НD Ready: 720p, Brightness: 500 cd / m2, Contrast: 1000: 1, Viewing angle: 178 °,
Main features of the DIGITAL DL-42K6E device:
Installed matrix (LCD-panel) 42 inches.
The required supply voltage for all nodes of the TV DIGITAL DL-42K6E provides a switching power supply.
MainBoard - the main board (motherboard) is a ME4206L0063 module, using VCT49X3F F2 000, MST6151DA-LF, K4D263238I-UC50, 24C32, 24C16, CXA2069Q and other chips.
The TAEW-G053D tuner provides TV reception and channel tuning.
