Technical description and composition of the SONY KDL-32EX402 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32EX402
Chassis / Version: AZ1N_3a-2
Panel: LTY320HM01 03 // LTY320AP04
T-CON: FHD_MB4_C2LV1.4
Inverter (backlight): SSI320_4UG01 REV: 1.0 KB5150 KJ1-V-0-1
PWM Inverter: SSI091ASN (24pin)
MOSFET Inverter: MDD1752
Power Supply (PSU): 3L314W PSC10308D G2SLD
PWM Power: STR-A6079M, SSC9513 (PWM Resonant)
MOSFET Power: TK10A60D, TPC8119 (8)
MainBoard: 1-881-019-32 BEN
IC MainBoard: Cpu: PNX85433EH1 NXP, Nand Flash: H27U1G8F2BTR, Spi Flash: M25P10A, Video: TDA19997HL / C1 Audio: TPA3110D2
Tuner: SUT-AE102T
Control: Remote: RM-ED022, IR: 1-881-589-11
Technical Specifications KDL-32EX402
SONY KDL-32EX402
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with an external inspection of the device and diagnosis of the malfunction. In this case, you should visually carefully examine all the elements of the SONY KDL-32EX402 TV, both internal and external. Sometimes, only by some signs can we determine the further direction of the localization of the fault. 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.
Faults in the PSC10308D, G2SLD-3L314W power supply module can be expressed in different ways, for example, the SONY KDL-32EX402 does not turn on at all and the control lights on its front panel do not light up and do not blink, and there are no signs of operability. In this case, first of all, it is necessary to check the fuse at the mains input. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason, and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible PWM chip SSC9513 (15), A6079M (7), TPC8119 (8) from the manufacturer.
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-32EX402 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.
Diagnosis and repair of the inverter is often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
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.
The BEN 1-881-019-32 motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the power supply circuits of the microcircuits are working, a software update may be necessary.
In cases where there is no tuning to the local television channels, you should make sure that the voltage of the varicaps (30-33V) and other supply voltages are at the terminals of the SUT-AE102T tuner.
Attention to users! Self-repair of a SONY KDL-32EX402 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram -------------------> Sony KDL-32EX401, 32EX402 chassis AZ1-N(3a-2)
The appearance of MainBoard 1-881-019-32 is shown in the figure below:1-881-019-32
1-881-019-32 can be used in TVs:
SONY KDL-32BX300 (Panel LTY320AP05), SONY KDL-32EX402 (Panel LTY320HM01 03), SONY KDL-40EX402 (Panel LTY400HM01), SONY KDL-40EX600 (Panel LTY400HF06), SONY KDL-46EX402 (Panel LTY460HM01).
PSU Advanced
The PSC10308D power module is installed in the KDL-32EX402 TV using the PFC (Power Factor Correction) node acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the SSC9513 15pin PWM controller eliminates the prolonged absence of the charging current of the rectifier filter's electrolytic capacitor for a period of 50 Hz, and the envelope of high-frequency pulses of the consumed current takes the form of a sine wave.
The appearance of the power supply
Main features of the device SONY KDL-32EX402:
Installed matrix (LCD panel) LTY320HM01 03 or LTY320AP04.
The matrix control uses the Timing Controller (T-CON) FHD_MB4_C2LV1.4.
The SSI320_4UG01 inverter is used to power the backlight, controlled by the SSI091ASN PWM controller (24pin). As power elements of the inverter, keys of the MDD1752 type are used.
The necessary supply voltages for all nodes of the SONY KDL-32EX402 television are generated by the 3L314W power module, or its analogs using the STR-A6079M, SSC9513 (PWM Resonant) microcircuits and TK10A60D, TPC8119 power switches (8).
MainBoard - the main board (motherboard) is a module 1-881-019-32, using Cpu chips: PNX85433EH1 NXP, Nand Flash: H27U1G8F2BTR, Spi Flash: M25P10A, Video: TDA19997HL / C1 Audio: TPA3110D2 and others.
The SUT-AE102T tuner provides television reception and channel tuning.
Information from an alternative source:
SONY KDL-32EX402 Chassis AZ1-N
Panel Type (Matrix): LTY320HM01 A03
Motherboard: 1-881-019-32, PNX85433ENH1, K4T51163QG-HCE7 x2, H27U1G8F2BTR, Tuner: ADOC11106105 SUT-AE102T
T-con: FHD_MB4_C2LV1.4, LAU4041X1A-Q, 24C64WP, MAX17122
Invertor: SSI320_4UG01, SSI091ASN, Tr-r: U320S6 104C 0
PSU: PSC10308E, SSC9513, 20113 0A4 528U, TPC8119
Remote control: RM-ED022
Additional technical information about the panel:
Brand: S-LCD
Model: LTY320HM01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 12/8 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
