Technical description and composition of the SONY KDL-40X3500 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-40X3500
Chassis / Version: FIX2
Panel: LTY400HC01
Power Supply (PSU): 1-873-813-14 = 1-873-813-13 = GF1 + DF1
PWM Power: L6562 (PFC), CXD9841P, MIP2H2
MOSFET Power: 3LP02C-TB-E, 3LN02C-TB-E, 2SK3569, 2SK3934
MainBoard: 1-873-983-11 FB2 Board 1-873-954-11
IC MainBoard: MB91305, S29AL016D7OTFI01, CXA2240AR, SIL9151CLU
Tuner: BTD-HF401Z (01) 1-873-956-11
Control: RM-ED010
Technical Specifications KDL-40X3500
SONY KDL-40X3500
General recommendations for repairing TV LCD
Diagnostics of the malfunction of the TV SONY KDL-40X3500, like all others, it is advisable to start with an external examination of possible changes, both external and internal elements. Often, for certain external signs, the repairman can draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
In the absence of any signs of operability, when the SONY KDL-40X3500 does not turn on and does not signal anything with the control lights on the panel, the power supply module GF1, DF1 is most likely faulty. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch 3LP02C-TB-E, 3LN02C-TB-E, 2SK3569, 2SK3934 for the possibility of an avalanche or thermal breakdown.
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 cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip L6562, CXD9841P, MIP2H2 or breakage of resistors in its bundle.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If the SONY KDL-40X3500 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
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.
It should be remembered that when the protection is turned off, there is always a risk of failure of the power elements of the inverter during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Diagnosis and repair of the AE motherboard is carried out by checking the performance of power stabilizers or updating the software (software).
Attention to users! Self-repair of a SONY KDL-40X3500 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
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).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the GF1 module provides for the use of the 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-40X3500:
Installed matrix (LCD panel) LTY400HC01.
The necessary supply voltages for all nodes of the SONY KDL-40X3500 TV are generated by the power module 1-873-813-14, or its analogs using microchips L6562 (PFC), CXD9841P, MIP2H2 and power switches of the type 3LP02C-TB-E, 3LN02C-TB -E, 2SK3569, 2SK3934.
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 provides the reception of television programs and tuning to channels.
Information from an alternative source:
SONY KDL-40X3500 Same chassis: SONY KDL-52X3500
Panel Type (Matrix): LTY400HC01
Motherboard: 1-873-983-11 P / N A1268276B, AV: 1-873-950-11 P / N I1337469A, FREE VIEW: 1-873-955-11
T-con: 404652F IX2HC6LV1.2, Circuit Board: 1-876-612-11
Invertor: AT26060 (6) SSB400WA20S LJ97-01181A
PSU: 1-873-813-14 P / N A1362549C, SUB
PSU: 1-873-815-12 P / N A1256156B
Additional technical information about the panel:
Brand: S-LCD
Model: LTY400HC01
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.6x498.15 mm
Surface: Hard coating (3H)
Brightness: 550 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 1.07B (10-bit), CIE1931 90%
Response Time: 8/6 (Tr / Td); 8 (G to G)
Frequency: 120Hz
Lamp Type: 20 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V