Technical description and composition of the SONY KDL-46S2030 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-46S2030
Chassis / Version: WAX2
Panel: LTY460WS-L04
T-CON: 460WSC4LV2.3
Inverter (backlight): PCB2698, PCB2700
PWM Inverter: BD9886FV, LM2903
MOSFET Inverter: RSS065N06
Power Supply (PSU): 1-869-027-12 G2 board A1169591D
PWM Power: FA5501AN (PFC), CXD9841M, MIP2H2
MainBoard: 1-869-852-21, AV 1-869-850-25
IC MainBoard: Key Controller: 1-869-856-25
Tuner: I1173184B BTD-HF431Z 8-597-571-00
Control: RM-ED005
Technical Specifications KDL-46S2030
SONY KDL-46S2030
General recommendations for repairing TV LCD
It is advisable to start the repair and diagnostics of the SONY KDL-46S2030 TV with a careful external examination of the internal and external elements, including case parts, a display, buttons and cables. It often happens that some damage to elements or connections will help determine the correct 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.
In the case when the KDL-46S2030 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, most likely in this case the G2 A1169591D power 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.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Sometimes the SONY KDL-46S2030 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the inverter itself, including the power supply unit (power supply unit).
Diagnostics of the PCB2698, PCB2700 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.
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 the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
If the motherboard B 1-869-852-21, AV 1-869-850-25 is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the Key Controller elements: 1-869-856-25.
In cases where there is no tuning to the local television channels, you should make sure that the voltage of the varicaps (30-33V) and other supply voltages at the terminals of the tuner I1173184B BTD-HF431Z 8-597-571-00 are available.
Remember! Attempts to self-repair by users of the SONY KDL-46S2030 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of MainBoard 1-869-852-21 is shown in the figure below:1-869-852-21
1-869-852-21 can be used in televisions:
SONY KDL-40V2000 (Panel LTZ400WS-LH2), SONY KDL-46S2030 (Panel LTY460WS-L04), SONY KDL-46V2000 (Panel 46 " 720p HD (1366x720)), SONY KDL-26S2000 (Panel LTY260W2-L16).
The appearance of the power supply
Main features of the device SONY KDL-46S2030:
Installed matrix (LCD panel) LTY460WS-L04.
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-46S2030 TV are generated by the power module 1-869-027-12, or its analogs using the FA5501AN (PFC), CXD9841M, MIP2H2 microcircuits.
MainBoard - the main board (motherboard) is a 1-869-852-21 module, using Key Controller microcircuits: 1-869-856-25 and others.
The tuner I1173184B BTD-HF431Z 8-597-571-00 provides the reception of television programs and tuning to channels.
Information from an alternative source:
SONY KDL-46S2030 Chassis WAX2
Panel Type (Matrix): LTY460WS-L04
Motherboard: 1-869-852-21, AV: 1-869-850-25, TUNER: I1173184B,
T-con: 460WSC4LV2.3,
Invertor: PCB2698,
Invertor: PCB2700,
PSU: A1169591D, Key Controller: 1-869-856-25
Remote control: RM-ED005
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTY460WS-L04
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1366x768, WXGA
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 1018.35x572.544 mm
Surface: Antiglare (Haze 41%), Hard coating (3H)
Brightness: 530 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 24 pcs CCFL Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 41 pins
Voltage: 5.0V