Technical description and composition of the TV SHARP LC-15SH1E, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-15SH1E
Panel: LQ150V3Z50 // LQ150V3FZ40
Inverter (backlight): integrated into PSU
MOSFET Inverter: 2SC6000
Trans Inverter: ZA073WJ
Power Supply (PSU): DUNTKC857WE
PWM Power: STR-W6765N
MainBoard: KC860WE
IC MainBoard: CPU: TDA15521E / N1B80, EEPROM: 24C64
Tuner: 1Y5ED501
Control: Remote: GA339WJ8A, IR: DUNTKC859WE
Technical Specifications LC-15SH1E
SHARP LC-15SH1E
General recommendations for repairing TV LCD
Any repair of electronic equipment begins with an external inspection of the device and diagnostics of the malfunction. In this case, you should visually carefully examine all the elements of the SHARP LC-15SH1E TV, both internal and external. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Sometimes the SHARP LC-15SH1E TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the common power module DUNTKC857WE = inv. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and, in the event of an open circuit, the reason should be sought in the power semiconductor elements of the pulsed flyback converter of the main PSU. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch of the converter, which can be installed separately on the radiator, or integrated with a PWM controller.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If there is no image when you turn on the SHARP LC-15SH1E, or it appears for a second and disappears completely, but there is sound, most likely either the backlight lamps or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
Repair of the inverter DUNTKC857WE = pit can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Remember! Attempts to self-repair by users of the SHARP LC-15SH1E TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
Service manual / schematic diagram --------------------> SHARP LC-13SH1E, LC-15SH1E
Service Manual with Schematic Diagram 76 year 2004 models LC-13SH1E, LC-15SH1E.
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-15SH1E device:
Installed matrix (LCD panel) LQ150V3Z50 or 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-15SH1E 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 CPU chips: TDA15521E / N1B80, EEPROM: 24C64 and others.
The 1Y5ED501 tuner provides TV reception and channel tuning.
Information from an alternative source:
SHARP LC-15SH1E
Panel Type (Matrix): LQ150V3FZ50,
Motherboard: KC860WE, TDA15521E / N1B80, 24C64W6, 39VF010, SAW K3953M & K9456M, AN17821A, Tuner: 1Y5ED501, IXA370WJ, BD8120FP, 0507TK16F, THC63LVDF84B
PSU & Invertor: QPWBFC857WJN4 (QKITPC857WJN4) DUNTKC857WE, STR-W6765, ZA073WJ B531
Remote control: GA339WJSA, IC remote ETF00.
In some cases, before calling the repair service, you should make sure that your TV is really defective.
If the SHARP LC-15SH1E does not turn on or periodically turns off, it is useful to check the sockets and extension cords at the points where the TV is connected to the network, for example, using a regular table lamp.
If the SHARP LC-15SH1E does not respond to the remote, but the control buttons on the panel work, there is a certain probability of a malfunction of the remote (the remote does not work). It is advisable to check or replace the batteries in it.
If, when watching broadcasting programs, a notification of the absence of a signal appears (no signal), you should make sure that the TV is in the TV reception mode (digital / analog), or check the antenna or cable equipment.
You can check the operation of the TV from other external devices.
If there is no sound only when watching analog television programs, you should check the sound system in the settings. For Russia, D / K (6.5 MHz), for European countries B / G (5.5 MHz). In modern TVs, a region is usually chosen to set the color and sound standards - for Russia, “East Europe” (Eastern Europe).
If SHARP LC-15SH1E hangs during operation, does not respond to either the remote control or the buttons on the control panel, rebooting sometimes helps. To do this, you must completely disconnect the TV from the network by pulling the plug from the outlet, and turn it back on after 10-15 seconds.