Technical description and composition of the SONY KDL-40U3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-40U3000
Chassis / Version: SE2
Panel: T400XW01 V0
T-CON: 5540T01025
Inverter (backlight): H.V2358.101 / B
Power Supply (PSU): 1-874-220-11 & 1-874-224-11
PWM Power: CXD9841P, MIP2H2, FA5501A (PFC), TDA8932BT
MOSFET Power: 2SK3797, 2SK3561, FSF05A60
MainBoard: 1-874-223-11
IC MainBoard: TDA9973AHL, D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH
Tuner: BTP-HC401 (10)
Control: RM-ED009
Technical Specifications KDL-40U3000
SONY KDL-40U3000
General recommendations for repairing TV LCD
Possible manifestations of defects
- The SONY KDL-40U3000 TV does not turn on and does not show any signs of operability at all. There is no reaction to either the remote control or the front panel control buttons.
Typically, with such manifestations, the defect is caused by faulty elements in the main power module 1-874-220-11. It is necessary to verify the presence of secondary voltages and, if they are absent, check the power switches (2SK3797, 2SK3561, FSF05A60) and rectifier diodes for possible short circuit.
During avalanche and thermal breakdowns of diodes in the secondary circuits, the converters of the main source, PFC and standby mode can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. PWM chips CXD9841P, FA5501A (PFC), TDA8932BT can also cause a breakdown of power keys and are checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken when working, and the protection circuits should be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the motherboard 1-874-223-11 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - TDA9973AHL, D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the BTP-HC401 tuner (10), if there is no channel tuning, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Owners and users of the SONY KDL-40U3000 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
The appearance of MainBoard 1-874-223-11 is shown in the figure below:1-874-223-11
1-874-223-11 can be used in TVs:
SONY KDL-32P3000 (Panel LTA320WT-L06), SONY KDL-32U3000 (Panel LTA320WT-L06), SONY KDL-37P3000 (Panel T370XW02), SONY KDL-40P3000 (Panel T400XW01 V0), SONY KDL-26S3000 (Panel V260B1-L07 Rev.C3 ), SONY KDL-32P3020 (Panel LTA320WT-L06), SONY KDL-40U3000 (Panel T400XW01 V0).
PSU Advanced
According to the conditions of compliance with modern international standards for household switching power supplies, the module 1-874-220-11 provides for the use of the Power Factor Correction unit. The PFC circuit is a flyback converter based on the FA5501A 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-40U3000:
Installed matrix (LCD-panel) T400XW01 V0.
The matrix control uses the Timing Controller (T-CON) 5540T01025.
An H.V2358.101 inverter is used to power the backlight.
The necessary supply voltages for all nodes of the SONY KDL-40U3000 TV are generated by the power module 1-874-220-11, or its analogs using microcircuits CXD9841P, MIP2H2, FA5501A (PFC), TDA8932BT and power switches of the type 2SK3797, 2SK3561, FSF05A60.
MainBoard - the main board (motherboard) is a module 1-874-223-11, using TDA9973AHL, D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH and others.
Tuner BTP-HC401 (10) provides the reception of television programs and tuning to channels.
Information from an alternative source:
SONY KDL-40U3000 Chassis SE2
Panel Type (Matrix): T400XW01 V0
Motherboard: 1-874-223-11
T-con: 5540T01025, INVERTOR & Interface: 4H.V2358.101 / B
PSU: 1-874-220-11, SUB
PSU: 1-874-224-11, Key Controller: 1-874-221-11, IR Sensor: 1-874-222-11
Remote control: RM-ED009 DIAGRAM Chassis SE2
Additional technical information about the panel:
Brand: AUO
Model: T400XW01 V0
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 885.168x497.664 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 550 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit)
Response Time: 15/8 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Balance board)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
