Technical description and composition of the TV SHARP LC-15SH2E, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-15SH2E
Panel: LQ150V3FZ40
Inverter (backlight): integrated into PSU
MOSFET Inverter: 2SC6000
Trans Inverter: ZA073WJ
Power Supply (PSU): DUNTKC857WE V650M QPWBFC857WJN4
PWM Power: STR-W6765N
MainBoard: KC860WE XC860WJN5
IC MainBoard: TDA15521E / N1B80, IX3251CE (TDA9178), MM1563DF, THC63LVDF84B, THC63LVDF84B, IXA370WJ, BD8120FP, 24C64, TDA15521E / N1B80
Tuner: 1Y5ED501
Control: Remote: GA339WJSA
Technical Specifications LC-15SH2E
SHARP LC-15SH2E
General recommendations for repairing TV LCD
Possible malfunctions
- The SHARP LC-15SH2E TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In such cases, the fault should be sought first in the DUNTKC857WE power supply module. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And during short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers STR-W6765N, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, or obviously working.
- 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.
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 power keys for breakdown and secondary windings of 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 when working, 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 blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the KC860WE 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). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements TDA15521E / N1B80, IX3251CE (TDA9178), MM1563DF, THC63LVDF84B, THC63LVDF84B, IXA370WJ, BD8120FP, 24C64, TDA15521E / N1B80 requires the necessary training and professional skills for repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the tuner 1Y5ED501 and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
TV users and owners must remember that attempts to self-repair a SHARP LC-15SH2E TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service Manual with Schematic Diagram 20 year 2005 model LC-15SH2E.
Service manual / schematic diagram --------------------> SHARP LC-15SH2E
The appearance of the MainBoard KC860WE is shown in the figure below:KC860WE
KC860WE can be used in TVs:
SHARP LC-13SH1 (Panel 13 " 921600 dots VGA), SHARP LC-15SH1E (Panel LQ150V3Z50), SHARP LC-15SH2E (Panel LQ150V3FZ40).
The appearance of the power supply
Main features of the SHARP LC-15SH2E device:
Installed matrix (LCD panel) LQ150V3FZ40.
To power the backlight, a converter is used, combined with a power supply. The transformer ZA073WJ is installed in the inverter converter. As power elements of the inverter, keys of the 2SC6000 type are used.
The necessary supply voltages for all nodes of the SHARP LC-15SH2E TV are generated by the DUNTKC857WE power module, or its analogs using STR-W6765N microcircuits.
MainBoard - the main board (motherboard) is a KC860WE module using TDA15521E / N1B80, IX3251CE (TDA9178), MM1563DF, THC63LVDF84B, THC63LVDF84B, IXA370WJ, BD8120FP, 24C64, TDA155, and other chips.
The 1Y5ED501 tuner provides TV reception and channel tuning.
LCD TV SHARP LC-15SH2E with LCD LQ150V3FZ40, diagonal size 15 "format 4: 3. The brightness of the screen 430 cd / m² is organized by fluorescent lights CCFL (EEFL). Contrast, as the ratio of maximum brightness to minimum, not less than 500: 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 (2x2.1 W) provides two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
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.
Overall dimensions: with stand 473x359x176 mm, without stand 473x318x79 mm.
Mass of the TV: without stand: 4.8 kg.
Attention! The LQ150V3FZ40 panel of the SHARP LC-15SH2E 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!