Technical description and composition of the SONY KDL-32CX520 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32CX520
Chassis / Version: AZ2F_P-2
Panel: V315H3-L01
T-CON: V315H3-CPE6 - 35-D057144; CM2801A
Power Supply (PSU): PSC10349C M - G2AS-C 3H370W 147428111
MainBoard: 1-883-753-32 - Y2009430A BAT-V
IC MainBoard: CXD4727GB, K4B2G1646C-HCH9, KFM2GN6Q2B, Y164B, NJU72040, Sil9287BCNU, GL850G
Tuner: CXD2825GA
Control: RM-ED045
Technical Specifications KDL-32CX520
SONY KDL-32CX520
General recommendations for repairing TV LCD
TV SONY KDL-32CX520, like any other, it is advisable to start repairing it by inspecting the internal and external visible physical visual changes. 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. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Sometimes the SONY KDL-32CX520 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the general power module G2AS-C 3H370W PSC10349C M. The diagnostics of the power supply should always be started by checking the fuse and, if it breaks, you must first check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown .
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
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.
If the SONY KDL-32CX520 does not have an image, but there is sound and the TV is controlled from the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors.
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
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 the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Repair or diagnostics of the BAT-V FX0094301 009571 Rev100, Y2009490A, 003182, REV.100 motherboard must be started by checking the power conditioners. If necessary, you should update the software (software).
We recommend the owners of the KDL-32CX520 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-32CX520, 40CX520 CHASSIS AZ2-F
The appearance of MainBoard 1-883-753-32 is shown in the figure below:1-883-753-32
1-883-753-32 can be used in TVs:
SONY KDL-32CX520 (Panel V315H3-L01), SONY KDL-32EX421 (Panel LTY320AN02), SONY KDL-32EX720 (Panel LTY320HJ01), SONY KDL-40EX521 (Panel LTY400HM08 001), SONY KDL-46EX720 (Panel LTY460HJ05 3D), SONY KDL-46CX520 (Panel LTY460HN01), SONY KDL-40CX521 (Panel LTY400HM07).
The appearance of the power supply
Main features of the device SONY KDL-32CX520:
Installed matrix (LCD panel) V315H3-L01.
The matrix control uses the Timing Controller (T-CON) V315H3-CPE6.
The formation of the necessary supply voltages for all nodes of the SONY KDL-32CX520 TV is carried out by the PSC10349C power supply module, or its analogs.
MainBoard - the main board (motherboard) is a module 1-883-753-32, using microcircuits CXD4727GB, K4B2G1646C-HCH9, KFM2GN6Q2B, Y164B, NJU72040, Sil9287BCNU, GL850G and others.
The CXD2825GA tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V315H3-L01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: MVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 6000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8.5 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
