Technical description and composition of the TV SHARP LC-37WD1RU, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-37WD1RU
Panel: LK370T3LZ6AZ
T-CON: CPWBX3547TPZ
Inverter (backlight): RDENC2300TPZZ
Power Supply (PSU): FSP289-5E01
PWM Power: NCP1230D6
MainBoard: PCB000223
IC MainBoard: CPU: TDA15134E / N1A04, PNX: PNX5010E / M1, HDMI: TDA9975AEL / 1022 EEPROM: 24C32
Tuner: TD1318AF / IVP-3
Control: GA574WJSA, IR: PCB000220D
Technical Specifications LC-37WD1RU
SHARP LC-37WD1RU
General recommendations for repairing TV LCD
Any repair of electronic equipment begins with an external inspection of the device and diagnostics of the malfunction. In this case, you should visually carefully examine all the elements of the SHARP LC-37WD1RU television, both internal and external. Often, for certain external signs, the repairman can draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Sometimes the SHARP LC-37WD1RU TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is a failure of the common power module. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown.
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 chip from the manufacturer.
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.
Sometimes the SHARP LC-37WD1RU TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including the power supply unit (power supply unit).
When repairing the RDENC2300TPZZ inverter, it is often necessary to disable the protection for diagnostics, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
Once again, remind users! Attempts to self-repair a TV SHARP LC-37WD1RU without the appropriate qualifications and experience can lead to its complete failure to repair!
Service manual / schematic diagram -------------------> SHARP LC-37WD1RU
Sharp LC-32WD1E, LC-32WD1S, LC-32WD1RU, LC-37WD1E, LC-37WD1S, LC-37WD1RU, LC-42WD1E, LC-42WD1S, LC-42WD1RU, LC-32WT1E, LC-37WT1E, LC-42WT1E
The appearance of MainBoard PCB000223 is shown in the figure below:PCB000223
PCB000223 can be used in TVs:
SHARP LC-32WD1RU (Panel LK315T3LZ5AZ), SHARP LC-37WD1RU (Panel LK370T3LZ6AZ), SHARP LC-42WD1RU (Panel T420XW01 V.7).
The appearance of the power supply
Main features of the SHARP LC-37WD1RU device:
Installed matrix (LCD panel) LK370T3LZ6AZ.
The matrix control uses the Timing Controller (T-CON) CPWBX3547TPZ.
To power the backlight used inverter RDENC2300TPZZ.
The necessary supply voltages for all nodes of the SHARP LC-37WD1RU TV are generated by the FSP289-5E01 power supply module, or its analogs using NCP1230D6 microcircuits.
MainBoard - the main board (motherboard) is a PCB000223 module using CPU chips: TDA15134E / N1A04, PNX: PNX5010E / M1, HDMI: TDA9975AEL / 1022 EEPROM: 24C32 and others.
The TD1318AF / IVP-3 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SHARP
Model: LK370T3LZ6AZ
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black
Active Area: 819.6x460.8 mm
LCD TV SHARP LC-37WD1RU with LCD LK370T3LZ6AZ, diagonal size 37 "(94 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² by using fluorescent lamps CCFL (EEFL). Contrast, as the ratio of maximum brightness to minimum, not less than 1200: 1. Dynamic contrast ratio of 3000: 1 is achieved by controlling the backlight, depending on the brightness of the plot.
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 x2. 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, 1360x768.
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 168 watts.
Overall dimensions: with stand 913x655x293 mm, without stand 913x592x110 mm.
TV Weight: with stand: 23.5 kg, without stand: 20 kg.
Attention! The LK370T3LZ6AZ panel of the SHARP LC-37WD1RU 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!