Technical description and composition of the TV SONY KDL-S32A12U, type of panel and applicable modules. The composition of the modules.SONY
Model: KDL-S32A12U
Chassis / Version: WAX
Panel: LTY320W2-L02
T-CON: 320W2C4LV3.4
Inverter (backlight): PCB2638-1
Power Supply (PSU): 1-865-240-31 G2 + 1-867-366-22 GE2
PWM Power: FA5501AN (PFC), CXD9841M,, STR-A6169 (Standby)
MainBoard: A2E board A1128517M, A1128517M, 1-867-365-11
IC MainBoard: MSP4411K-QA-D5-001, CXA2163AQ-T6, TPA3004D2PHPR, SVPEX-SREVB, K4D262338G
Control: RM-EA002
Appearance
SONY KDL-S32A12U
General recommendations for repairing TV LCD
It is reasonable to start the repair of the SONY KDL-S32A12U TV with a careful external inspection before proceeding to the diagnosis of the malfunction. It is advisable to carefully internal and external components. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. 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.
Sometimes the SONY KDL-S32A12U 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 the failure of the common power supply module G9 1-865-240-31, GE2 1-867-366-22. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is torn, 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 a breakdown state in such situations.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip can also cause a breakdown of the power switch of the converter.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter feeding the inverter should be checked.
Often, attempts to repair the PCB2638-1 inverter 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.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Repair of the motherboard A1128517M, A1128517M, 1-867-365-11 must 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.
Attention to users! Self-repair of a SONY KDL-S32A12U TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram ---------------> Sony KLV-S23A10E, KLV-S26A10E, KLV-S32A10E, KDL-S23A12U, KDL-S26A12U, KDL-S32A12U - WAX CHASSIS
The appearance of MainBoard A2E is shown in the figure below:A2E
A2E can be used in TVs:
SONY KDL-S32A12U (Panel LTY320W2-L02), SONY KLV-S26A10E (Panel LTY260W2-L06).
The appearance of the power supply
Main features of the device SONY KDL-S32A12U:
Installed matrix (LCD panel) LTY320W2-L02.
The matrix control uses the Timing Controller (T-CON) 320W2C4LV3.4.
To power the backlight used inverter PCB2638-1.
The necessary supply voltages for all nodes of the SONY KDL-S32A12U TV are generated by the power module 1-865-240-31, or its analogs using the FA5501AN (PFC), CXD9841M,, STR-A6169 (Standby) microcircuits.
MainBoard - the main board (motherboard) is an A2E module, using microchips MSP4411K-QA-D5-001, CXA2163AQ-T6, TPA3004D2PHPR, SVPEX-SREVB, K4D262338G and others.
Information from an alternative source:
SONY KDL-S32A12U Chassis WAX
Panel Type (Matrix): LTY320W2_L02, CARD READER: A1122473C, HDMI: 1-867-446-14, AV: 1-867-365-11
T-con: 320W2C4LV3.4,
Invertor: PCB2638-1,
PSU: 1-865-240-31, Sub Board: A1128517M, D Sub Board: A1128517M, IR Sensor: 1-867-363-11
Remote control: RM-EA002
Additional technical information about the panel:
Brand: S-LCD
Model: LTY320W2-L02
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA