SONY
Model: KDL-32L4000
Chassis / Version: CZ1 (Version 1)
Panel: LTY320AB01 005
T-CON: Y320AB01C2LV0.1 12v LMX4122T0, ISL976, 24C64WP, 39L50, 5000AIL B749X9Q, 043Z, i7814HS,
Inverter (backlight): SI320_12C01
PWM Inverter: OZ9966SN, S393
MOSFET Inverter: APM4008N (3)
Power Supply (PSU): DPS-205CP - 147409911 G1D (32)
PWM Power: DLA001D (16pin), DAS001 (8pin), L6562D (PFC), DAS01A
MainBoard: 1-857-143-11 B
IC MainBoard: LED Board: FLX00017360-101, Key Controller: FLX00017361-104, CMX1444R, TFA9810T, PNX8541E1
Tuner: ENG37E10KF
Control: RM-YD025
SONY
Model: KDL-32L4000
Chassis / Version: CZ1 (Version 2)
Panel: T315XW02 V.L
T-CON: 1-857-213-11
Inverter (backlight): 1-857-208-11
Power Supply (PSU): EADP-170AFA 1-857-108-11
MainBoard: 1-857-036-41
Control: RM-YD025
SONY
Model: KDL-32L4000
Chassis / Version: CZ1 (Version 3)
Panel: LTY320AB02 // LTZ320AB02
T-CON: 1-489-035-11
Inverter (backlight): LJ97-01867A 1-857-267-11
Power Supply (PSU): EADP-170AFA 1-857-108-11
MainBoard: 1-857-036-31
Control: RM-YD025
SONY
Model: KDL-32L4000
Chassis / Version: NEX
Panel: LTY320AB01 // AB02
T-CON: Y320AB01C2L V0.1
Inverter (backlight): SSI320 12C01 // 8A01Rev0.2
PWM Inverter: OZ9966SN (24)
MOSFET Inverter: APM4008N
Trans Inverter: LT-U3208
Power Supply (PSU): DPS-205CP 1-474-099-11 G1D
PWM Power: DLA001D (16), DAS001 (8), L6562D (PFC), DAS01A
MOSFET Power: 2SK3569, STP20NM60FP
MainBoard: 1-857-143-11 - FLX 00017358-104
IC MainBoard: PNX8541E1, M25P10, TDA10048HN, CXB1444R, CD4052BPW, NJM4556AM, NJM4558AM, TFA9810T / N1
Tuner: ENG37E10KF
Control: RM-ED014
Technical Specifications KDL-32L4000
SONY KDL-32L4000
General recommendations for repairing TV LCD
Like any other TV, SONY KDL-32L4000 should start repairing with an external inspection for visible changes in the external and internal elements. Visible damage to elements can sometimes suggest further directions for finding a defect before starting the necessary measurements. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
In the absence of any signs of operability, when the SONY KDL-32L4000 does not turn on and does not signal anything with the control lights on the panel, the power supply module G1D DPS-205CP 1-474-099-11 is most likely to be faulty. It is advisable to start the troubleshooting of the power supply module by checking the line fuse. If it is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the 2SK3569, STP20NM60FP converter, which are often found in breakdown conditions in such situations.
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 DLA001D (16) DAS001 (8) L6562D (8) DAS01A or breakage of resistors in its harness.
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, 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 feeding the inverter should be checked.
When repairing the SSI320 12C01 //_8A01Rev0.2 inverter, it is often necessary to disable protection for diagnostics, which, for fire safety reasons, 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.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Repair or diagnostics of the motherboard FLX 00017358-104 should be started by checking the power stabilizers. If necessary, you should update the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - PNX8541E1, M25P10, TDA10048HN, CXB1444R, CD4052BPW, NJM4556AM, NJM4558AM, TFA9810T / N1 with new or obviously working ones.
In cases where there is no tuning to the local television channels, you should make sure that there is a varicap supply voltage (30-33V) and other supply voltages at the terminals of the ENG37E10KF tuner.
We recommend the owners of the KDL-32L4000 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual / schematic diagram -------------------> Sony KDL-32L4000, KDL-37L4000 chassis CZ1
PSU schematic diagram -------------------> DPS-205CP G1D(32) Power Supply
The appearance of MainBoard 1-857-143-11 is shown in the figure below:1-857-143-11
1-857-143-11 can be used in TVs:
SONY KDL-32L4000 (Panel LTY320AB01 005), SONY KDL-32L4000 (Panel LTY320AB01).
PSU Advanced
In the KDL-32L4000 TV, the DPS-205CP power module is installed 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 L6562D 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-32L4000:
Installed matrix (LCD panel) LTY320AB01 or AB02.
The matrix control uses the Timing Controller (T-CON) Y320AB01C2L.
To power the backlight, an SSI320 inverter is used, it is controlled by the OZ9966SN PWM controller (24). A transformer LT-U3208 is installed in the inverter converter. As power elements of the inverter, keys of the APM4008N type are used.
The necessary supply voltages for all nodes of the SONY KDL-32L4000 TV are generated by the DPS-205CP power supply module or its analogs using DLA001D (16), DAS001 (8), L6562D (PFC), DAS01A microcircuits and power switches of the 2SK3569, STP20NM60FP type.
MainBoard - the main board (motherboard) is a module 1-857-143-11, using chips PNX8541E1, M25P10, TDA10048HN, CXB1444R, CD4052BPW, NJM4556AM, NJM4558AM, TFA9810T / N1 and others.
The ENG37E10KF tuner provides TV reception and channel tuning.
Information from an alternative source:
SONY KDL-32L4000 (Option 4)
Panel Type (Matrix): LTY320AB02
Motherboard: FLX0017358-106 Ver: 5.13 1-857-143-B, PNX8541E1 / 2009, E5110AJBG-6E-E x2, Tuner: ENG37E10KF
T-con: Y320AB01C2L V0.1, LMX4122TO, EM6365TS-6G, 2042AF, 24C64WP
Invertor: SSI320-8A01 Rev: 0.2, OZ9966SN, S393
PSU: DPS-205CP,
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTY320AB01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 14%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 41 pins
Voltage: 12.0V
