Technical description and composition of the SONY KDL-40D3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-40D3000
Chassis / Version: WAX3
Panel: LTY400WH-LH1
T-CON: 324046WHC6LV2.2
Inverter (backlight): SSB400WA16
Power Supply (PSU): 1-872-986-12 G3, 1-872-987-11 D1
PWM Power: L6562 (PFC), CXD9841P, MIP2H2
MainBoard: 1-873-000-11 BE1, BH 1-872-989-11
IC MainBoard: XD9890AQ, MSP3417G B8 V3, TMDS341A, TPA31000D2, HY27US08281A, MB91305, 24C256BWP, S29AL016D70TFI01
Tuner: BTD-HF401Z 8-597-613-00
Technical Specifications KDL-40D3000
SONY KDL-40D3000
General recommendations for repairing TV LCD
It is advisable to start the repair and diagnostics of the SONY KDL-40D3000 TV with a careful external examination of the internal and external elements, including case parts, a display, buttons and cables. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Faults in the G3 power supply module 1-872-986-12, D1 1-872-987-11 can be expressed in different ways, for example, the SONY KDL-40D3000 does not turn on at all and the control lights on its front panel do not light up and do not blink, all the signs are missing health. When diagnosing and repairing the power supply unit G3 1-872-986-12, D1 1-872-987-11, it is first necessary to check the fuse, and if it breaks, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
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 repairing the SSB400WA16 inverter, it is often necessary to disable the protection for diagnostics, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
In such cases, special care should be taken during diagnostics, 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.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
Before replacing the BTD-HF401Z 8-597-613-00 tuner, if there is no tuning for the channels, you must first check the power supply voltage at its terminals, including the power supply of varicaps (30-33V).
Remember! Attempts to self-repair by users of the SONY KDL-40D3000 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
Service manual / schematic diagram -------------> Sony KDL-32D3000, KDL-40D3000, KDL-46D3000 CHASSIS WAX3
PSU / schematic diagram -------------> Sony 1-872-986-12, 1-872-986-13 G3 Power supply
The appearance of MainBoard 1-873-000-11 is shown in the figure below:1-873-000-11
1-873-000-11 can be used in TVs:
SONY KDL-32D3000 (Panel LTZ320WH-LH2 100), SONY KDL-40D3000 (Panel LTY400WH-LH1).
PSU Advanced
The KDL-40D3000 TV is equipped with a 1-872-986-12 power supply module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the L6562 PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when the reactance (about 15-30 ohms at a frequency of 50 Hz) determines the charge current. As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the device SONY KDL-40D3000:
Installed matrix (LCD-panel) LTY400WH-LH1.
The matrix control uses the Timing Controller (T-CON) 324046WHC6LV2.2.
To power the backlight used inverter SSB400WA16.
The necessary supply voltages for all nodes of the SONY KDL-40D3000 TV are generated by the power module 1-872-986-12, or its analogs using chips L6562 (PFC), CXD9841P, MIP2H2.
MainBoard - the main board (motherboard) is a module 1-873-000-11, using microcircuits XD9890AQ, MSP3417G B8 V3, TMDS341A, TPA31000D2, HY27US08281A, MB91305, 24C256BWP, S29AL016D70TFI01 and others.
The BTD-HF401Z 8-597-613-00 tuner provides TV reception and channel tuning.
Information from an alternative source:
Sony KDL-40D3000 Chassis WAX3
Panel Type (Matrix): LTY400WH-LH1, MAIN AV: 1-873-000-11, DIGITAL: 1-872-989-11
T-con: 324046WHC6LV2.2, SIDE AV: 1-872-984-11,
Invertor: SSB400WA16
PSU: 1-872-986-12, SUB
PSU: 1-872-987-11, IR SENSOR: 1-873-380-11, LED: 1-872-982-11
Additional technical information about the panel:
Brand: S-LCD
Model: LTY400WH-LH1
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.168x497.664 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 530 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 1.07B (10-bit), CIE1931 90%
Response Time: 8/6 (Tr / Td); 8 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: 16 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
