Technical description and composition of the SONY KDL-46X3500 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-46X3500
Chassis / Version: FIX2
Panel: LTY460HH-LH2
T-CON: 404652HHC8L V1.8
Inverter (backlight): LJ97-01183B - SSB460HA24-R / L - Rev0.5
Power Supply (PSU): 1-873-813-14 GF1
PWM Power: L6562 (PFC), CXD9841P, MIP2H2
MainBoard: 1-873-983-11 FB2 Board
IC MainBoard: MB91305, S29AL016D7OTFI01, CXA2240AR
Tuner: BTD-HF401Z (01) 1-873-956-11
Technical Specifications KDL-46X3500
SONY KDL-46X3500
General recommendations for repairing TV LCD
It is advisable to start diagnosing a malfunction of the SONY KDL-46X3500 TV, like all others, with an external examination of possible changes, both external and internal elements. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. Electrolytic capacitors of filters with a swollen casing, as well as ring cracks formed in the soldered leads of heating elements, or a layer of coal on burnt resistors sometimes tell the repairman the causes of the malfunction and possible consequences.
Sometimes the SONY KDL-46X3500 TV just 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 a failure of the common power module. 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 key.
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-46X3500 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Diagnostics of the inverter can be difficult due to the operation of the protection, 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 diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
It should be remembered! Attempts to repair the SONY KDL-46X3500 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service manual / schematic diagram -------------> Sony KDL-40/46/52X3500 chassis FIX2
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).
The appearance of the power supply
Main features of the device SONY KDL-46X3500:
Installed matrix (LCD panel) LTY460HH-LH2.
The matrix control uses the Timing Controller (T-CON) 404652HHC8L.
To power the backlight used inverter LJ97-01183B.
The necessary supply voltages for all nodes of the SONY KDL-46X3500 TV are generated by the power module 1-873-813-14, or its analogs using L6562 (PFC), CXD9841P, MIP2H2 microcircuits.
MainBoard - the main board (motherboard) is a module 1-873-983-11, using microchips MB91305, S29AL016D7OTFI01, CXA2240AR and others.
The tuner BTD-HF401Z (01) 1-873-956-11 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)