Technical description and composition of the TV SONY KLV-32NX400, type of panel and applicable modules. The composition of the modules.SONY
Model: KLV-32NX400
Chassis / Version: AZ1-A (5-0)
Panel: LTY320AP5 001
Inverter (backlight): SSI320_4UG01 rev1.0
PWM Inverter: SSI091ASN (24)
MOSFET Inverter: MDD1752
Trans Inverter: C U320S6 101S
Power Supply (PSU): PSC10308D M - G2LS-D
PWM Power: STR-A6079M, SSC9513 (PWM Resonant)
MOSFET Power: K10A60D, TPC8119 (8)
MainBoard: 1-880-238-21
IC MainBoard: CPU: MT5388GFMG, DDR: H5PS5162FFR, Nand flash: K9F1208UOC, 24C128, TPA3110D2
Tuner: TEQE8-L01A
Control: RM-GA016
Technical Specifications KLV-32NX400
SONY KLV-32NX400
General recommendations for repairing TV LCD
Like any other TV, the SONY KLV-32NX400 should start repairing with an external inspection for visible changes in the external and internal elements. Often, for certain external signs, the repairman can draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. 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.
Faults in the G2LS-D PSC10308D M power supply module can be expressed in different ways, for example, the SONY KLV-32NX400 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. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch K10A60D for the possibility of an avalanche or thermal breakdown.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller A6079 (8) SSC9513 (16), which should be checked it is possible only by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of the device for their operation.
In cases where the SONY KLV-32NX400 TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
When repairing the SSI320_4UG01 rev1.0 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, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
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 TEQE8-L01A tuner.
We recommend the owners of the KLV-32NX400 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 KLV-26-32NX400, KLV-32-40NX500 Chassis AZ1-A 5-0
KLV-26NX400, KLV-32NX400, KLV-32NX500, KLV-40NX500
The appearance of MainBoard 1-880-238-21 is shown in the figure below:1-880-238-21
1-880-238-21 can be used in televisions:
SONY KLV-26BX300 (Panel T260XW05 V.0 T260XW05 V.0), SONY KLV-26BX300 (Panel V260B3-L05 C1), SONY KLV-32BX300 (Panel LTY320AP04), SONY KLV-32NX400 (Panel LTY320AP5 001).
PSU Advanced
The KLV-32NX400 TV is equipped with a PSC10308D power module 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.
Main features of the device SONY KLV-32NX400:
The matrix (LCD panel) LTY320AP5 001 is installed.
The SSI320_4UG01 inverter is used to power the backlight lamps; it is controlled by the SSI091ASN PWM controller (24). The transformer C U320S6 101S is installed in the inverter converter. As power elements of the inverter, keys of the MDD1752 type are used.
The required supply voltages for all nodes of the SONY KLV-32NX400 TV are generated by the PSC10308D power module or its analogs using STR-A6079M, SSC9513 (PWM Resonant) microcircuits and power switches of the K10A60D, TPC8119 type (8).
MainBoard - the main board (motherboard) is a module 1-880-238-21, using CPU chips: MT5388GFMG, DDR: H5PS5162FFR, Nand flash: K9F1208UOC, 24C128, TPA3110D2 and others.
The TEQE8-L01A tuner provides TV reception and channel tuning.
Trademark: SONY, Model: KLV-32NX400.
Briefly from the TV: LCD, 32 ", 1366x768, 720p HD, there is PIP, sound: 20W, HDMI connectors: 3.
On the official site of Sony there is firmware (Firmware) - software update. Firmware dated 06/10/2010.
The composition uses MainBoard 1-880-238-21 and LCD-panel LTY320AP5 001.
Power Supply Unit (PSU) PSC10308D M - G2LS-D Power Supply.
SONY KLV-32NX400 TV with an LTY320AP5 LCD display, 32 "(81 cm) diagonal size in 16: 9 format.
The LTY320AP5 panel and the software of the 1-880-238-21 board allow viewing the image in HD quality with a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and image formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Video processor supported multimedia file formats: MP3, JPEG.
The power of the sound speaker system 20 W (2x10 W) is provided by two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x3, component, VGA, HDMI x3, USB. An output for connecting headphones is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in the operating mode from the network is 109 watts.
Overall dimensions: with stand 825x554x260 mm, without stand 825x517x102 mm.
TV Weight: with stand: 15.5 kg, without stand: 13 kg.
Attention! The LTY320AP5 001 panel of the SONY KLV-32NX400 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
