Technical description and composition of the SONY KDL-32U3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32U3000
Chassis / Version: SE2
Panel: LTA320WT-L06
T-CON: 320WTC2LV3.9 LMU7142MO, 24C64WP, MAX9590, EL7585AIL
Inverter (backlight): LT320SLS12 rev: 03
PWM Inverter: OZ9966SN (24H). 2903 7U35 (8n)
MOSFET Inverter: K4075
Trans Inverter: S320SL
Power Supply (PSU): A-1276-472-A GS2
PWM Power: MIP2H2 (7), MCZ3001DB (18n), TDA8932BT
MOSFET Power: K4075 CG 7Y, 2SK3568
MainBoard: 1-874-223-11 = 1-874-223-12 A-1276-477-A = B1
IC MainBoard: CXD9922R D61123F1 TDA9973AHL / 8/12 TDA8933 TDA8932BT-N2
Tuner: BTP-HC401 (10) 8-597-585-10
Control: Remote: RM-ED009, IR: 1-874-222-11 (1-728-836-11)
Technical Specifications KDL-32U3000
SONY KDL-32U3000
General recommendations for repairing TV LCD
It is reasonable to start the repair of the SONY KDL-32U3000 TV with a careful external inspection before proceeding to the diagnosis of the malfunction. It is advisable to carefully internal and external components. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In the case when the KDL-32U3000 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely the GS2 A1276472A power supply module is faulty in this case. In this case, the diagnosis and repair of the common power supply should always be started by checking the mains fuse. When it is broken, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the rectifier diode bridge of the network, as well as the large electrolytic capacitor of the filter of the network rectifier and the key transistor K4075 CG 7Y, K3568.
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 MIP2H2 (7n) MCZ3001DB (18n), TDA8932BT, or open resistors in its harness.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If the SONY KDL-32U3000 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.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair of the motherboard B1 1-874-223-12, A-1276-477-A must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CXD9922R D61123F1 TDA9973AHL / 8/12 TDA8933 TDA8932BT-N2 which may require replacement with new ones.
If there is no reception of television channels, but the TV is working properly from external devices, first of all you need to check the voltage of the varicaps of the tuner BTP-HC401 (10) 8-597-585-10, which is usually within 30-33V, as well as others supply voltage at the terminals of the tuner.
Attention to the owners! Attempts to repair the TV SONY KDL-32U3000 on your own are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual / schematic diagram -------------------> Sony KDL-26/32/37/40U3000 chassis SE2
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).
The appearance of the power supply
Main features of the device SONY KDL-32U3000:
Installed matrix (LCD-panel) LTA320WT-L06.
The matrix control uses the Timing Controller (T-CON) 320WTC2LV3.9.
An LT320SLS12 inverter is used to power the backlight, controlled by the OZ9966SN PWM controller (24n). 2903 7U35 (8H). The transformer S320SL is installed in the inverter converter. As power elements of the inverter, keys of the K4075 type are used.
The necessary supply voltages for all nodes of the SONY KDL-32U3000 TV are generated by the A-1276-472-A power supply module or its analogs using MIP2H2 (7), MCZ3001DB (18н) microcircuits, TDA8932BT and power switches of the type K4075 CG 7Y, 2SK3568.
MainBoard - the main board (motherboard) is a module 1-874-223-11, using microcircuits CXD9922R D61123F1 TDA9973AHL / 8/12 TDA8933 TDA8932BT-N2 and others.
The BTP-HC401 (10) 8-597-585-10 tuner provides the reception of television programs and tuning to channels.
Information from an alternative source:
Sony KDL-32U3000 chassis SE2
Panel Type (Matrix): LTA320WT-L06,
Motherboard:1-874-223-12, A-1276-477-A, CXD9922R, TDA9973AHL/8/12, D61123F1 100, 24C02W1 x3, 24C32W1, CXD1968R, HY825DC256160CE-6, NAND128W3ABN6, TPC8109 x2, Tuner: 8-597-585-10,BTP-HC401(10)
T-con: 320WTC2LV3.9, LMU7142MO, K4D263238I-UC50, 24C64WP, MAX9590, EL7585AIL
Inverter: LT320SLS12 Rev03, OZ9966SN, K4075 x4, trafo S320SL x6,
PSU: A-1276-472-A, MIP2H2, MCZ3001DB, K3568 x2, TDA8932BT
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320WT-L06
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
