Technical description and composition of the SHARP LC-32FH500E TV, panel type and applicable modules. The composition of the modules.SHARP
Model: LC-32FH500E
Panel: LK315D3LA17
T-CON: CPWBX4129TPZB, MAX2 EPM240T100C5N, H5PS5162FFR, THV3056, VPP1500BFG
Inverter (backlight): RDENC2621TPZZ
PWM Inverter: BD9897FS
MOSFET Inverter: AP9962AGH x8
Power Supply (PSU): RDENCA366WJQZ - FSP170-4F01
PWM Power: STR-A6069H, NCP1606B (PFC), SSC9512S
MOSFET Power: FQPF5N50C x3
MainBoard: QPWBXF470WJZZ - DSETUF470WE02
IC MainBoard: MSH9000-LF, MX25L6445EMI-10G, MSB1220-LF, K4T51163Q6-HCF7
Tuner: TDAG4-B03A
Control: GA608WJSA
Technical Specifications LC-32FH500
SHARP LC-32FH500E
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the SHARP LC-32FH500E TV with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. Many visible signs make it possible to determine the future 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.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the RDENCA366WJQZ - FSP170-4F01 power module is faulty and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. 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 FQPF5N50C x3 for the possibility of an avalanche or thermal breakdown.
It should be borne in mind that in the repair practice it is extremely rare that key transistors of the N-FET type fail for no reason that should be looked for by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, either dried electrolytic capacitors or dangling resistors of the primary circuit of the PSU, involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM controller microcircuit STR-A6069H, NCP1606B, SSC9512S, which it is desirable to check by replacement, are subject to verification.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If the SHARP LC-32FH500E does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Often, attempts to repair the inverter RDENC2621TPZZ are complicated by the fact that the fault diagnosis is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Repair of the motherboard QPWBXF470WJZZ - DSETUF470WE02 should 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. Board repair and replacement of microcircuits MSH9000-LF, MX25L6445EMI-10G, MSB1220-LF, K4T51163Q6-HCF7 are carried out with the necessary equipment, and the corresponding element base.
If the TV works normally from external devices, but does not tune into television channels, the TDAG4-B03A tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the power supply of varicaps (30-33V).
Remember! Attempts to self-repair by users of the SHARP LC-32FH500E TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
LC-32FH500E, LC-32FB500E, LC-32FH510E, LC-32FH510RU, LC-32FH510S, LC-32FB510E, LC-32FB510RU, LC-32FS510E, LC-32FS510RU
Service manual / schematic diagram --------------> Sharp LC-32FH500E, LC-32FB500E, LC-32FH510E, LC-32FH510RU, LC-32FH510S, LC-32FB510E, LC-32FB510RU, LC-32FS510E, LC-32FS510RU
An LCD power supply module RDENCA366WJQZ is installed in the LC-32FH500E TV using the PFC (Power Factor Correction) scheme, which acts as an active filter to eliminate the higher harmonic components of the current consumption. The step-up converter based on the NCP1606B PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when the charge current determines its reactance (of the order of 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.Main features of the SHARP LC-32FH500E device:
Installed matrix (LCD panel) LK315D3LA17.
The matrix control uses the Timing Controller (T-CON) CPWBX4129TPZB.
The RDENC2621TPZZ inverter is used to power the backlight, controlled by the BD9897FS PWM controller. As power elements of the inverter, keys of the type AP9962AGH x8 are used.
The necessary supply voltages for all nodes of the SHARP LC-32FH500E TV are generated by the RDENCA366WJQZ power supply module or its analogs using the STR-A6069H, NCP1606B (PFC), SSC9512S microcircuits and power switches of the FQPF5N50C x3 type.
MainBoard - the main board (motherboard) is a QPWBXF470WJZZ module, using microchips MSH9000-LF, MX25L6445EMI-10G, MSB1220-LF, K4T51163Q6-HCF7 and others.
The TDAG4-B03A tuner provides television reception and channel tuning.
Information from an alternative source:
SHARP LC-32FH500E
Panel Type (Matrix): LK315D3LA17,
Motherboard: QPWBXF470WJZZ - DSETUF470WE02, MSH9000-LF, MSB1220-LF, 24C64, K4T51163Q6-HCF7 x2, MX25L6445EMI-10G, K24C02C x2, Tuner TDAG4-B03A,
T-con: CPWBX4129TPZB, MAX2 EPM240T100C5N, H5PS5162FFR, 24C64, THV3056, VPP1500BFG, ISL24016IRTZ
Invertor: RDENC2621TPZZ, BD9897FS, AP9962AGH x8
PSU: RDENCA366WJQZ - FSP170-4F01, STR-A6069H, SSC9512S, NCP1606B, FQPF5N50C x3, EN210A, EN220A, W215G, Remote control GA608WJSA,
Additional technical information about the panel:
Brand: SHARP
Model: LK315D3LA17
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: ASV, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Brightness: 500 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6 (G to G)
Lamp Type: 14 pcs CCFL Without Driver...
LCD TV SHARP LC-32FH500 with LCD LK315D3LA17, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 400 cd / m² by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 25000: 1 is achieved by control backlighting depending on the brightness of the plot.
The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system 20 W (2x10 W) provides 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 x2, component, SCART x2, RGB, HDMI x2, USB, 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, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving television channels in DVB-T MPEG4 standards.
The power consumed by the TV from the network in operating mode is 71 watts.
Overall dimensions: with stand 773x574x245 mm, without stand 773x517x105 mm.
TV Weight: with stand: 12.6 kg, without stand: 10 kg.
Attention! The LK315D3LA17 panel of the SHARP LC-32FH500 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!