Technical description and composition of the SONY KDL-32P3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32P3000
Chassis / Version: SE2
Panel: LTA320WT-L06
T-CON: 320WTC2LV3,9
Inverter (backlight): LT320SLS12 rev: 0 LT320SLS12 REV: 03
PWM Inverter: OZ9966 (24)
MOSFET Inverter: K4075
Power Supply (PSU): A-1276-472-A 1-874-218-11 (1-728-835-11),
PWM Power: MCZ3001DB, MIP2H2, MM1530ATT, TDA8932BT, TDA8933
MOSFET Power: 2SK3568
MainBoard: 1-874-223-11 = B1 = 1-874-223-12
IC MainBoard: TDA9973AHL, NEC D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH
Tuner: BTP-HC401 (10)
Control: Remote: RM-ED009, IR 1-874-222-11 (1-728-836-11)
Technical Specifications KDL-32P3000
SONY KDL-32P3000
General recommendations for repairing TV LCD
Repair of the SONY KDL-32P3000 TV is advisable to start with an external inspection of all its constituent elements, both internal electronic components and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Visible damage to elements can sometimes suggest further directions for finding a defect before starting the necessary measurements. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a hint in the assumptions about the causes and consequences of the malfunction.
If the power supply module GS2 A-1276-472-A 1-874-218-11 (1-728-835-11) fails, the external manifestations may be different, for example, the SONY KDL-32P3000 does not turn on at all and there is no indication of control light bulbs on the front. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch 2SK3568, 2SK3568 is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip MCZ3001DB, MIP2H2, MM1530ATT, TDA8932BT-N2 TDA8933 can also cause a breakdown of the power switch of the converter.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
If the SONY KDL-32P3000 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.
Often, attempts to repair the inverter LT320SLS12 rev: 0 LT320SLS12 REV: 03 are complicated by the fact that the diagnosis of the malfunction is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
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.
Motherboard B1 1-874-223-12 = 1-874-223-11 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the power supply circuits of the microcircuits are working, a software update may be necessary. If it is not possible to replace the MB board (SSB), you need to check the health of its elements - TDA9973AHL, NEC D61123F1, CXD9922R, NJM3414AV, TDA9886TS / V4,118, LA5795T-TLM-E, PQ070XZ01ZPH. Defective components should be replaced.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
Service manual / schematic diagram -------------------> Sony KDL-26/32/37/40P3000, KDL-26/32/37/40P300H 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-32P3000:
Installed matrix (LCD-panel) LTA320WT-L06.
The matrix control uses the Timing Controller (T-CON) 320WTC2LV39.
To power the backlight, an LT320SLS12 inverter is used, it is controlled by the OZ9966 PWM controller (24). As power elements of the inverter, keys of the K4075 type are used.
The necessary supply voltages for all nodes of the SONY KDL-32P3000 TV are generated by the A-1276-472-A power supply module or its analogs using MCZ3001DB, MIP2H2, MM1530ATT, TDA8932BT, TDA8933 and power switches of the 2SK3568 type.
MainBoard - the main board (motherboard) is a module 1-874-223-11, using chips TDA9973AHL, NEC 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.
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
