Technical description and composition of the TV SHARP LC-32GA9E, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-32GA9E LC-32GA9RU
Panel: LK315T3LZ4BX.
Inverter (backlight): 32RUNTKA214WJZZ (8lamp)
PWM Inverter: STR-H2022
Trans Inverter: TIE30P-01
Power Supply (PSU): DUNTKD605WE 01 - FD605WJN3 -
PWM Power: MR4020, TXA037WJ, MR4030, NJM2904M (LM358)
MainBoard: KD890WE01 XD890WJZZ
IC MainBoard: SiI9021, RH-IXB064WJN1Q, RH-IXB698WJZZQ, VCT69xyP, TDA8931, TDA9886, TDA9885TS
Tuner: QA021WJ - FD608WJ - QPWBX608WJN2
Control: IR: QPWBFD607WJN1
Technical Specifications LC-32GA9E
SHARP LC-32GA9E
General recommendations for repairing TV LCD
Repair SHARP LC-32GA9E must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including the case. It often happens that some damage to elements or connections will help determine the correct direction of troubleshooting and localization of the defect. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In the case when the LC-32GA9E does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, most likely in this case the power module is faulty. 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.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of the device for their operation.
If the SHARP LC-32GA9E TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
Diagnosis and repair of the inverter is often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Remember! Attempts to self-repair by users of the SHARP LC-32GA9E TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual / schematic diagram --------------> Sharp LC-32GA9EE, LC-32GA9EF, LC-32GA9EI, LC-32GA9EK, LC-32GA9ERU, LC-32BV9E, LC-37GA9EE, LC-37GA9EF, LC-37GA9EI, LC-37GA9EK, LC-37GA9ERU, LC-37BV9E
The appearance of the MainBoard KD890WE01 is shown in the figure below:KD890WE01
The appearance of the power supply
Main features of the SHARP LC-32GA9E device:
Installed matrix (LCD panel) LK315T3LZ4BX ..
To power the backlight, an inverter 32RUNTKA214WJZZ is used, it is controlled by the PWM controller STR-H2022. A transformer TIE30P-01 is installed in the inverter converter.
The necessary supply voltages for all nodes of the SHARP LC-32GA9E TV are generated by the DUNTKD605WE power module or its analogs using MR4020, TXA037WJ, MR4030, NJM2904M (LM358) microcircuits.
MainBoard - the main board (motherboard) is a KD890WE01 module, using SiI9021, RH-IXB064WJN1Q, RH-IXB698WJZZQ, VCT69xyP, TDA8931, TDA9886, TDA9885TS and others.
Tuner QA021WJ - FD608WJ - QPWBX608WJN2 provides the reception of television programs and tuning to channels.
LCD TV SHARP LC-32GA9E with LCD LK315T3LZ4BX., Diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² by backlighting with CCFL fluorescent lamps (EEFL). Contrast as the ratio of maximum brightness to the 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.
Overall dimensions: with stand 811x648x304 mm, without stand 811x589x115 mm.
TV Weight: with stand: 18.9 kg, without stand: 16.5 kg.
Attention! Panel LK315T3LZ4BX. LCD TV SHARP LC-32GA9E is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!