Technical description and composition of the SHARP LC-32GD9E TV, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-32GD9E
Panel: LK315T3LZ4BX
Lamp backlight: 8 LAMP CCFL
T-CON: CPWBX3508TPZP T3Z16AFG-0001
Inverter (backlight): 32RUNTKA214WJZZ
PWM Inverter: STR-H2022
Power Supply (PSU): DUNTKD605WE3
PWM Power: MR4020
MainBoard: XD890WJNI
IC MainBoard: MP1410ES, EPM240, Si19021CTU, VCT69936 B3 000, CM052B, TDA8931T, mPC4558
Tuner: P70-GD9
Technical Specifications LC-32GD9E
SHARP LC-32GD9E
General recommendations for repairing TV LCD
Possible manifestations of defects
- The SHARP LC-32GD9E TV does not turn on and does not show any signs of turning on, it does not respond to the control buttons or the remote control.
Most likely in this case, the main switching power supply (IIPS) DUNTKD605WE3 is faulty. It is necessary to measure its output supply voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for the probability of breakdown in semiconductor PN junctions.
In case of breakdowns of semiconductors in secondary circuits, the converter can usually operate abnormally in short circuit mode, and during short circuit in the power elements of the primary circuit, the main fuse often 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. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) of the MR4020, in the absence of external damage and a short circuit between the terminals, are checked by replacing with obviously good ones.
- 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. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are working, 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 the operating mode, it does not respond to the remote control.
Repair or diagnostics of the XD890WJNI 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). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MP1410ES, EPM240, Si19021CTU, VCT69936 B3 000, CM052B, TDA8931T, mPC4558 and replace the failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
If the TV works normally with external devices but does not tune into television channels, the P70-GD9 tuner 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.
Attention! For users and owners of LC-32GD9E TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Service manual / schematic diagram --------------> Sharp LC-32GD9EE, LC-32GD9EF, LC-32GD9EI, LC-32GD9EK, LC-32GD9ERU, LC-37GD9EE, LC-37GD9EF, LC-37GD9EI, LC-37GD9EK, LC-37GD9ERU
Main features of the SHARP LC-32GD9E device:Installed matrix (LCD panel) LK315T3LZ4BX.
The matrix control uses the Timing Controller (T-CON) CPWBX3508TPZP.
To power the backlight, an inverter 32RUNTKA214WJZZ is used, it is controlled by the PWM controller STR-H2022.
The necessary supply voltages for all nodes of the SHARP LC-32GD9E TV are generated by the DUNTKD605WE3 power module, or its analogs using MR4020 microcircuits.
MainBoard - the main board (motherboard) is an XD890WJNI module using MP1410ES, EPM240, Si19021CTU, VCT69936 B3 000, CM052B, TDA8931T, mPC4558 and others microcircuits.
The P70-GD9 tuner provides television reception and channel tuning.
Information from an alternative source:
Sharp LC-32GD9E Main - XD890WJNI, IC1702, 1703, 1707 - 20WZ11, IC1706 - MP1410ES, IC1710-EPM240, IC1901, 1902 - 24C02B1, IC1905 - Si19021CTU, IC2301 - 83220, IC2303 - C201, IC2303 - C201, IC2303 - 641, 21022100 IC3002 - VCT69936 B3 000 (Micronas), IC3003 - PIC16F913, IC3301 - FRC9429A B2 (Micronas), IC708 - MP1410ES, Main tuner :, Tuner - P70-GD9, IC202 - STV0360C, IC203 - W53, IC204 - LV053A input, П , IC301 - TDA8931T, IC302 - TDA8931T, IC303 - mPC4558
Additional technical information about the panel:
Brand: SHARP
Model: LK315T3LZ4BX
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black
Active Area: 697.68x392.26 mm
LCD TV SHARP LC-32GD9E with LCD, diagonal size 32 "(81 cm) 16: 9 format. Brightness of the screen glow 450 cd / m² organized by backlight fluorescent lamps CCFL (EEFL). Contrast, as the ratio of maximum brightness to minimum not less than 1200: 1.
You can view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the speaker system of sound 30 W (2x15W) provide 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, audio x3, S-Video, SCART x2, RGB, VGA, HDMI x2, 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.
A digital tuner is capable of receiving television channels in DVB-T standards.
The power consumed by the TV from the network in operating mode is 161 watts.
Overall dimensions: with stand 811x648x304 mm, without stand 811x589x115 mm.
TV Weight: with stand: 19.2 kg, without stand: 16.7 kg.
Attention! The LCD TV panel SHARP LC-32GD9E is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
