Technical description and composition of the SONY KDL-46X3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-46X3000
Chassis / Version: FIX2
Panel: LTY460HH-LH2
T-CON: 1-873-860-11 (172868211)
Inverter (backlight): 1-873-817-12 (172876212) + LJ97-01183B (SSB460HA24-R / L - Rev0.5)
Power Supply (PSU): 1-873-813-13
PWM Power: L6562 (PFC), CXD9841P, MIP2H2 (Standby)
MOSFET Power: 2SK3934 (PFC), 2SK3561
MainBoard: 1-873-983-11 FB2 Board + 1-873-954-11 (172873711)
IC MainBoard: MB91305, S29AL016D7OTFI01, CXA2240AR, SIL9151CLU
Tuner: BTD-HF401Z (01) 1-873-956-11 (172873911)
Technical Specifications KDL-46X3000
SONY KDL-46X3000
General recommendations for repairing TV LCD
Repair of the SONY KDL-46X3000 TV should begin with a careful external examination of all its components and modules. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. Experienced repairmen are well aware of how ring cracks in soldered terminals look, swollen capacitors, and other causes of problems in electronic devices.
In cases where the SONY KDL-46X3000 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink and there are no sounds and no signs of operability when turning on, the power module 1-873 is most likely faulty -813-13 or there is no standby power. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) 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 PWM controller chip L6562, CXD9841P, MIP2H2 itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
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 supplying the inverter should be checked. When disabling protection in order to enable the diagnosis of a malfunction, special care should be taken, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
Repair of the motherboard 1-873-983-11 + 1-873-954-11 (172873711) + 1-873-954-11 (172873711) must begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In cases of attempts to repair the MB board (SSB), it is necessary to check the health of its elements - MB91305, S29AL016D7OTFI01, CXA2240AR, SIL9151CLU which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the terminals of the tuner BTD-HF401Z (01) 1-873-956-11 (172873911). It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
It is necessary to remember to users that attempts to self-repair a SONY KDL-46X3000 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual / schematic diagram -------------> Sony KDL-40/46/52X3500 chassis FIX2
PSU / schematic diagram -------------> 1-873-813-13
The appearance of MainBoard 1-873-983-11 is shown in the figure below:
1-873-983-11
1-873-983-11 can be used in televisions:
SONY KDL-40X3500 (Panel LTY400HC01), SONY KDL-46X3500 (Panel LTY460HH-LH2), SONY KDL-52X3500 (Panel LTZ520HC01), SONY KLV-46X350A (Panel LTY460HH-LH2), SONY KDL-46X3000 (Panel LTY460HH-LH2).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, module 1-873-813-13 provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the L6562 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the device SONY KDL-46X3000:
Installed matrix (LCD panel) LTY460HH-LH2.
The matrix control uses the Timing Controller (T-CON) 1-873-860-11.
An inverter 1-873-817-12 is used to power the backlight.
The necessary supply voltages for all nodes of the SONY KDL-46X3000 TV are generated by the power module 1-873-813-13, or its analogs using microchips L6562 (PFC), CXD9841P, MIP2H2 (Standby) and power switches of the type 2SK3934 (PFC), 2SK3561 .
MainBoard - the main board (motherboard) is a module 1-873-983-11, using microchips MB91305, S29AL016D7OTFI01, CXA2240AR, SIL9151CLU and others.
The tuner BTD-HF401Z (01) 1-873-956-11 (172873911) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY460HH-LH2
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Active Area: 1018.08x572.67 mm
Frequency: 120Hz
Lamp Type: CCFL Embedded (Balance board)