Technical description and composition of the TV SHARP LC-32AD5RU-BK, type of panel and applicable modules. The composition of the modules.SHARP
Model: LC-32AD5RU-BK
Panel: LK315T3LZ5CZ LK315T3LZ93
T-CON: TW10784V-0 73A X3562TP ZE
Inverter (backlight): RDENC2287TPZ A
PWM Inverter: BD9777
MOSFET Inverter: C5103 RSS085 (8) TPC8110 (8)
Power Supply (PSU): CEF273A
PWM Power: MIP2F4 (Standby), MP2A5060
MainBoard: CMF111B
IC MainBoard: VCT6973G-B3-000, SIL9025CTU, TDA9832T
Control: LCDTV 010240
Technical Specifications LC-32AD5RU
SHARP LC-32AD5RU-BK
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the SHARP LC-32AD5RU-BK TV with a careful external examination of internal and external elements, including case parts, a display, buttons, and cables. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. 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.
If the CEF273A power supply module malfunctions, the external manifestations may be different, for example, the SHARP LC-32AD5RU-BK does not turn on at all and there is no indication of the indicator lights on the front panel. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the converter, which are often found in breakdown conditions in such situations.
As a rule, the keys of flyback converters, which use the N-Fet field effect transistor on a separate radiator, or integrated with the MIP2F4 (7) PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If the SHARP LC-32AD5RU-BK 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.
Often, attempts to repair the inverter RDENC2287TPZ A are hampered by the fact that the diagnosis of the malfunction 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.
When diagnosing with disabled protection, special precautions must be observed, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
In cases of attempts to repair the motherboard CMF111B, it is necessary to check the operability of the power stabilizers of the microcircuits and, if possible, update the software (software).
Owners and users of the SHARP LC-32AD5RU-BK TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service manual / schematic diagram --------------> Sharp LC-32AD5E-BK
The appearance of the MainBoard CMF111B is shown in the figure below:CMF111B
CMF111B can be used in TVs:
SHARP LC-26AD5RU-BK (Panel LK255T3LZ5AZ), SHARP LC-32AD5RU-BK (Panel LK315T3LZ5CZ LK315T3LZ93), TOSHIBA 32W300P 32W300Ps (Panel LC320W01 (SL)(22) ).
The appearance of the power supply
Main features of the SHARP LC-32AD5RU-BK device:
Installed matrix (LCD panel) LK315T3LZ5CZ LK315T3LZ93.
The matrix control uses the Timing Controller (T-CON) TW10784V-0.
The RDENC2287TPZ inverter is used to power the backlight, controlled by the BD9777 PWM controller. As power elements of the inverter, keys of the type C5103 RSS085 (8) TPC8110 (8) are used.
The necessary supply voltages for all nodes of the SHARP LC-32AD5RU-BK TV are generated by the CEF273A power module, or its analogs using MIP2F4 (Standby), MP2A5060 microcircuits.
MainBoard - the main board (motherboard) is a CMF111B module, using VCT6973G-B3-000, SIL9025CTU, TDA9832T and others.
Additional technical information about the panel:
Brand: SHARP
Model: LK315T3LZ5CZ
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black
Active Area: 697.68x392.26 mm