Technical description and composition of the SHARP LC-32P55E TV, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-32P55E
Panel: LK315P3LZ10Z
T-CON: CPWBX3333TPZV
Inverter (backlight): 32RUNTKA214WJZZ
PWM Inverter: H2022, A393F
MOSFET Inverter: CG_QA
Trans Inverter: 305 AAHV 304 AQWV 306 AQTV
Power Supply (PSU): DUNTKD605WE
PWM Power: MR4020, MR4030,
MainBoard: PUNTKD608WE
IC MainBoard: VCT6973G, TDA8391T, MP1410ES, VCT6973G B2 000_, VHC153535, TDA9886
Tuner: UV1316 / A 1-4_3139 147 20691A
Control: IR: QPWBFD607WJN1
Technical Specifications LC-32P55E
SHARP LC-32P55E
General recommendations for repairing TV LCD
It is advisable to start diagnosing the malfunction of the SHARP LC-32P55E TV, like all others, with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. 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 the absence of any signs of operability, when the SHARP LC-32P55E does not turn on and does not signal anything with the control lights on the panel, most likely the QPWBSD605W3N4 power supply module is faulty. When diagnosing and repairing the power supply, first of all, it is necessary to check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes or power switch.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the microchip of the PWM controller MR4020, MR4030, may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If an active Power Factor Corrector (CMC) is used in the power module circuitry, it can sometimes become more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
If the SHARP LC-32P55E 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.
Diagnostics of the 32RUNTKA214WJZZ inverter can be difficult due to the protection being triggered, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the inverter power elements. Upon completion of the diagnosis, all regular protection circuits should be restored.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software). When repairing an MB board, you need to check its components VCT6973G, TDA8391T, MP1410ES, VCT6973G B2 000_, VHC153535, TDA9886. Defective items should be replaced.
Before changing the tuner UV1316 / A 1-4_3139 147 20691A, if it is not possible to tune to television channels, make sure that there are supply voltages, including varicap supply (30-33V), which must be measured on the corresponding tuner terminals.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
Service manual / schematic diagram --------------> Sharp LC-26P55EE, LC-26P55EF, LC-26P55EI, LC-26P55EK, LC-26P55ERU, LC-32P55EE, LC-32P55EF, LC-32P55EI, LC-32P55EK, LC-32P55ERU, LC-37P55EE, LC-37P55EF, LC-37P55EI, LC-37P55EK, LC-37P55ERU
The appearance of the MainBoard PUNTKD608WE is shown in the figure below:PUNTKD608WE
The appearance of the power supply
Main features of the SHARP LC-32P55E device:
Installed matrix (LCD panel) LK315P3LZ10Z.
The matrix control uses the Timing Controller (T-CON) CPWBX3333TPZV.
To power the backlight, an inverter 32RUNTKA214WJZZ is used, it is controlled by the PWM controller H2022, A393F. A transformer 305 AAHV 304 AQWV 306 AQTV is installed in the inverter converter. As power elements of the inverter, keys of the type CG_QA are used.
The necessary supply voltages for all nodes of the SHARP LC-32P55E TV are generated by the DUNTKD605WE power module, or its analogs using MR4020, MR4030, microcircuits.
MainBoard - the main board (motherboard) is a PUNTKD608WE module, using VCT6973G, TDA8391T, MP1410ES, VCT6973G B2 000_, VHC153535, TDA9886 and others.
The tuner UV1316 / A 1-4_3139 147 20691A provides the reception of television programs and tuning to channels.
Information from an alternative source:
SHARP LC-32P55E Tuner board and upch :, Tuner PHILIPS UV1316 / A 1-4_3139 147 20691A., Chip in the tuner TDA6508ATT., UCHI TDA9886., SAW - K3953M & K9456M, X201 40000. Processor board :, IC16692 B2002 ZCF., IC3001_L64 (SO8), (Start. and slave. with FFF)., IC2301_83220_ECVZ_P531., IC2704_CM0528_59K., IC1710_EPM3064A_TC 44-10N, IC1708_MP1410ES., IC702_IC1712_20WZ11., IC3003_PIC16F913., IC303_C21_5S86., IC2701_VHC153535., IC1706_MP1410ES., IC1901_24LC02 B1 (SO8). Bass and switching board :, IC301_IC302_TDA8391T., IC303_4558_G024B.
PSU. Inverter board :, Z7601_SANKEN H2022., Q1603_CG_QA., Z7602_A393F, BB con: 10J6kB.
SERVICE MODE:
menu: press VOL- and EXT (AV) on the panel and insert the plug into the network., Exit: the same as the input., Confirming the entry will be the letter K on the left of the screen (K-mode)., Next, to exit the menu Press on the VOL- and P- panels.
LCD TV SHARP LC-32P55E with LCD display LK315P3LZ10Z, 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 800: 1. The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in the standards 480i, 480p, 576i, 576p.
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 Weight: with stand: 19.5 kg, without stand: 17 kg.
Attention! The LK315P3LZ10Z panel of an SHARP LC-32P55E 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!
