Technical description and composition of the TV SONY KDL-46S2530, type of panel and applicable modules. The composition of the modules.SONY
Model: KDL-46S2530
Chassis / Version: WAX2T
Panel: LTY460WT-LH3
T-CON: 460WSC4LV2.3
Inverter (backlight): PCB2698, PCB2699, PCB2700, PCB2701 (CSN307-00 and CSN307-10)
PWM Inverter: BD9886FV, LM2903
MOSFET Inverter: RSS065N06
Power Supply (PSU): 1-871-504-12
PWM Power: CXD9841P, MIP2H2, FA5501AN (PFC)
MainBoard: 1-869-850-15 1-869-656-21 1-871-991-21
IC MainBoard: MB91305 BD9775FV CXD9199CG
Tuner: 1-869-657-12
Technical Specifications KDL-46S2530
SONY KDL-46S2530
General recommendations for repairing TV LCD
It is reasonable to start the repair of the SONY KDL-46S2530 TV with a careful external inspection before proceeding to the diagnosis of the malfunction. It is advisable to carefully internal and external components. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. 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.
If the power supply module 1-871-504-12 is faulty, the external manifestations may be different, for example, the SONY KDL-46S2530 does not turn on at all and there is no indication of the control lights on the front panel. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
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.
If the SONY KDL-46S2530 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repairing the inverter PCB2698, PCB2699, PCB2700, PCB2701 (CSN307-00 and CSN307-10) is difficult because in case of any malfunction or abnormal situation, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Repairing the motherboard 1-871-991-21 1-869-657-12 FEE 1-869-656-21 1-869-656-12 AV Board 1-869-850-15 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.
Once again, remind users! Attempts to self-repair a SONY KDL-46S2530 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram -------------> Sony KDL-32/40/46S2510, KDL-32S2520/2530, KDL-40/46S2530 CHASSIS WAX2T
The appearance of MainBoard 1-869-850-15 is shown in the figure below:1-869-850-15
1-869-850-15 can be used on TVs:
SONY KDL-26S2010 (Panel LTY260W2-L1), SONY KDL-32S2000 (Panel LTZ320WS-L05), SONY KDL-40S2530 (Panel LTY400WT-LH1), SONY KDL-46S2530 (Panel LTY460WT-LH3).
The appearance of the power supply
Main features of the device SONY KDL-46S2530:
Installed matrix (LCD panel) LTY460WT-LH3.
The matrix control uses the Timing Controller (T-CON) 460WSC4LV2.3.
The PCB2698 inverter is used to power the backlight lamps, it is controlled by the BD9886FV, LM2903 PWM controller. As power elements of the inverter, keys of the type RSS065N06 are used.
The necessary supply voltages for all nodes of the SONY KDL-46S2530 TV are generated by the power module 1-871-504-12, or its analogs using CXD9841P, MIP2H2, FA5501AN (PFC) microcircuits.
MainBoard - the main board (motherboard) is a module 1-869-850-15, using microchips MB91305 BD9775FV CXD9199CG and others.
The tuner 1-869-657-12 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY460WT-LH3
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1366x768, WXGA
Active Area: 1018.35x572.544 mm