Technical description and composition of the SHARP LC-37GA6E TV, panel type and applicable modules. The composition of the modules.SHARP
Model: LC-37GA6E
Panel: LK370T3FZA6
Inverter (backlight): RUNTKA167VJZZ-RUNTKA170
Power Supply (PSU): PSD-0437 RENDCA136W
MainBoard: QPWBXD334WJN3 DUNTKD334WJ
IC MainBoard: VCT49X7R-F2-000, 29w800db
Tuner: UR1316 / A I H-3
Technical Specifications LC-37GA6E
SHARP LC-37GA6E
General recommendations for repairing TV LCD
Repair of the SHARP LC-37GA6E TV is advisable to start with an external examination of all its constituent elements, both internal electronic components and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Often, according to the external signs and the nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for finding and localizing a malfunction. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In cases when the SHARP LC-37GA6E TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the RENDCA136W PSD- power supply module is most likely faulty 0437 or, which is much less common, there is no processor power on the motherboard. 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.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller that can only be checked by replacement, as well as others semiconductor elements (diodes, transistors, zener diodes).
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
If the SHARP LC-37GA6E does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
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 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.
Attention to the owners! Attempts at self-repair of the SHARP LC-37GA6E TV are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual / schematic diagram -------------------> Sharp LC-26GA6EE, LC-26GA6EF, LC-26GA6EI, LC-26GA6EK, LC-26GA6ERU, LC-26BV6E, LC-32GA6EE, LC-32GA6EF, LC-32GA6EI, LC-32GA6EK, LC-32GA6ERU, LC-32BV6E, LC-37GA6EE, LC-37GA6EF, LC-37GA6EI, LC-37GA6EK, LC-37GA6ERU
LC-26GA6EE, LC-26GA6EF, LC-26GA6EI, LC-26GA6EK, LC-26GA6ERU, LC-26BV6E, LC-32GA6EE, LC-32GA6EF, LC-32GA6EI, LC-32GA6EK, LC-32GA6ERU,LC-32BV6E, LC-37GA6EE, LC-37GA6EF, LC-37GA6EI, LC-37GA6EK, LC-37GA6ERU.
Main features of the SHARP LC-37GA6E device:Installed matrix (LCD panel) LK370T3FZA6.
RUNTKA167VJZZ - RUNTKA170 inverter is used to power the backlight.
The formation of the necessary supply voltages for all nodes of the SHARP LC-37GA6E TV is carried out by the PSD-0437 power supply module, or its analogs.
MainBoard - the main board (motherboard) is a QPWBXD334WJN3 module, using VCT49X7R-F2-000, 29w800db and other chips.
The tuner UR1316 / A I H-3 provides the reception of television programs and tuning to channels.
LCD TV SHARP LC-37GA6E with LCD LK370T3FZA6, diagonal size 37 "(94 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 800: 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 x4, S-Video, component, SCART x2, RGB, VGA, HDMI. 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.
Overall dimensions: with stand 917x707x307 mm, without stand 917x645x108 mm.
TV Weight: with stand: 22.5 kg, without stand: 18.5 kg.
Attention! The LK370T3FZA6 panel of the SHARP LC-37GA6E 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!