Technical description and composition of the SHARP LC-32GA8E TV, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-32GA8E
Panel: LK315T3LF16
T-CON: X3509TP
Inverter (backlight): RDENC2266TPZ C
PWM Inverter: BD9777, EZC F224
MOSFET Inverter: TPC8110, RSS085
Trans Inverter: NMB0007 (NMB0005)
Power Supply (PSU): QPWBSD605WJN5 WE1465
PWM Power: MR4030, MR4020
Mainboard: XD890WJN2
IC MainBoard: VST9673 MICRONAS,
Tuner: P55-GA9 GA8
Technical Specifications LC-32GA8RU
SHARP LC-32GA8E
General recommendations for repairing TV LCD
Repair SHARP LC-32GA8E must begin with a diagnosis of the malfunction and a thorough inspection of its external and internal components, including those in 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. 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 hint in the assumptions about the causes and consequences of the malfunction.
In the absence of any signs of operability, when the SHARP LC-32GA8E does not turn on and does not signal anything with the control lights on the panel, the WE1465 QPWBSD605WJN5 power supply module is most likely faulty. In this case, the diagnosis and repair of the common power supply should always be started by checking the mains fuse. When it breaks, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the rectifier diode bridge of the network, as well as the large electrolytic filter capacitor of the network rectifier and the key transistor.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM MR4030, MR4020 from the manufacturer.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
In cases where the SHARP LC-32GA8E TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
Repairing the inverter RDENC2266TPZ C is difficult because in case of any malfunction or emergency, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
Repair of the XD890WJN2 motherboard 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. If it is not possible to replace the MB (SSB) card, it is necessary to check the health of its elements - VST9673 MICRONAS,. Defective components should be replaced.
The malfunction of the P55-GA9 GA8 tuner is established after checking the software and all the supply voltages at its terminals, including the varicap supply voltage (30-33V).
Remember! Attempts to self-repair by users of the SHARP LC-32GA8E TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual / schematic diagram --------------> Sharp LC-32GA8EE, LC-32GA8EF, LC-32GA8EI, LC-32GA8EK, LC-32GA8RU, LC-32BV8EE, LC-32BV8EF, LC-32BV8EI, LC-32BV8EK, LC-32BV8RU, LC-37GA8EE, LC-37GA8EF, LC-37GA8EI, LC-37GA8EK, LC-37GA8RU, LC-37BV8EE, LC-37BV8EF, LC-37BV8EI, LC-37BV8EK, LC-37BV8RU
LC-32GA8EE, LC-32GA8EF, LC-32GA8EI, LC-32GA8EK, LC-32GA8ERU, LC-32BV8EE, LC-32BV8EF, LC-32BV8EI, LC-32BV8EK, LC-32BV8ERU, LC-37GA8EE, LC-37GA8EF, LC-37GA8EI, LC-37GA8EK, LC-37GA8ERU, LC-37BV8EE, LC-37BV8EF, LC-37BV8EI, LC-37BV8EK, LC-37BV8ER, LC-32GA8RU, LC-37GA8RU.
Main features of the SHARP LC-32GA8E device:
Installed matrix (LCD panel) LK315T3LF16.
The matrix control uses the Timing Controller (T-CON) X3509TP.
The RDENC2266TPZ inverter is used to power the backlight, controlled by the BD9777 PWM controller, EZC F224. The transformer NMB0007 (NMB0005) is installed in the inverter converter. As power elements of the inverter, keys of the type TPC8110, RSS085 are used.
The necessary supply voltages for all nodes of the SHARP LC-32GA8E TV are generated by the QPWBSD605WJN5 power module, or its analogs using MR4030, MR4020 microcircuits.
MainBoard - the main board (motherboard) is an XD890WJN2 module, using VST9673 MICRONAS chips, and others.
The P55-GA9 GA8 tuner provides television reception and channel tuning.
LCD TV SHARP LC-32GA8RU with LCD LK315T3LF15, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² by CCFL (EEFL) fluorescent lamps. 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 sound speaker system 20 W (2x10 W) 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, 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 804x636x304 mm, without stand 804x575x119 mm.
TV mass: with stand: 19 kg, without stand: 17 kg.
Attention! The LK315T3LF15 panel of the SHARP LC-32GA8RU 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!