Wednesday 11 March 2020

REPAIR / SERVICING TV SHARP LC-32LE700E

Technical description and composition of the SHARP LC-32LE700E TV, type of panel and applicable modules. The composition of the modules.
SHARP LED
Model: LC-32LE700E
Panel: R1LK315D3FZE0Y
T-CON: RUNTK4225TPZE
LED driver (backlight): no
Power Supply (PSU): R1LK315D3FZE0Y
MainBoard: DUNTKE306FM01 (MAIN Unit)
Technical Specifications LC-32LE700
SHARP LC-32LE700E
General repair guidelines for TV LCD LED
Diagnostics of malfunctions and repairs SHARP LC-32LE700E, as well as other electronic devices, it is recommended to start with an external examination of the external and internal elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
If the SHARP LC-32LE700E does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a malfunction of the power module R1LK315D3FZE0Y. In some cases, only the processor power regulator may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse is broken, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
In cases where the SHARP LC-32LE700E TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the R1LK315D3FZE0Y panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
A break in the line of LEDs connected in series cannot be detected with a multimeter or tester without disassembling the panel. To open all the transitions, several tens of volts are needed, and it is best to use a current source for such purposes.
Repair of the DUNTKE306FM01 motherboard (MAIN Unit) must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Attention to users! Self-repair of the SHARP LC-32LE700E TV without the appropriate qualifications and experience can lead to its complete non-repairability!


SCHEMATIC / SERVICE  diagram ---------->  Sharp LC-32LE700E, LC-32LE700RU, LC-32LE700S, LC-32LU700E, LC-32LU700S, LC-32LX700E, LC-32LX700RU, LC-40LE700E, LC-40LE700RU, LC-40LE700S, LC-40LU700E, LC-40LU700S, LC-40LX700E, LC-40LX700RU, LC-46LE700E, LC-46LE700RU, LC-46LE700S, LC-46LU700E, LC-46LU700S, LC-46LX700E, LC-46LX700RU, LC-52LE700E, LC-52LE700RU, LC-52LE700S


 Service Manual with Schematic Diagram 164 pages of 2009 FOR  the ----------> LC-32LE700E, LC-32LE700RU, LC-32LE700S, LC-32LU700E, LC-32LU700S, LC-32LX700E, LC-32LX700RU, LC-40LE700E, LC-40LE700RU, LC- 40LE700S, LC-40LU700E, LC-40LU700S, LC-40LX700E, LC-40LX700RU, LC-46LE700E, LC-46LE700RU, LC-46LE700ES, LC-46LU700E, LC-46LU700S, LC-46LX700E, LC-46L, 5200, LC-46LX00L LC-52LE700RU, LC-52LE700S.


 The appearance of the MainBoard DUNTKG135 is shown in the figure below:
DUNTKG135
DUNTKG135 can be used in TVs:
SHARP LC-39LE751RU (Panel V390HK1-LE6 Rev.C4), SHARP LC-60LE651RU (Panel R1JE600D3GV2AY).
Main features of the SHARP LC-32LE700E device:
Installed matrix (LED-panel) R1LK315D3FZE0Y.
The matrix control uses the Timing Controller (T-CON) RUNTK4225TPZE.
No LED driver is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the SHARP LC-32LE700E TV is carried out by the power module R1LK315D3FZE0Y, or its analogues.
MainBoard - the main board (motherboard) is a DUNTKE306FM01 module.

 Technical description
LED TV SHARP LC-32LE700 with LCD display R1LK315D3FZE0Y, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² with LED backlighting. Dynamic contrast ratio of 2,000,000: 1 is achieved by controlling the LEDs (LED) depending on the brightness of the plot

.In the manufacturing technology of the display of this model, LED (LED) backlighting is implemented.
The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.

Supported media file formats: JPEG.
The power of the sound system 20 W (2x10 W) provides two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART x2, RGB, VGA, HDMI x4, USB, RS-232. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.

A digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C standards.
The power consumed by the TV from the network in operating mode is 60 watts.
Overall dimensions: with stand 773x573x244 mm, without stand 773x528x103 mm.
TV mass: 13.5 kg.

Attention! The R1LK315D3FZE0Y panel of the SHARP LC-32LE700 LED TV is an expensive and unreliable element.

Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.