Technical description and composition of the SONY KDL-40HX853 TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-40HX853
Chassis / Version: AZ3F
Panel: FQLR400LT01
T-CON: PYL2 CXD90001G
LED driver (backlight): ST4046RD-S01 Rev1.0
PWM LED driver: AN37011B
Power Supply (PSU): APS-324 1-886-217-12
PWM Power: CXD9969AP, MIP2H2
MainBoard: 1-885-388-51 (173308951) - Y200A190A - 1P-011BJ00-4M10
IC MainBoard: CXD4727GB, K4B2G1646C-HCH9, KFM4G16Q4B, SIL9287BCNU, GL850G, D2826ER, TPA6138, PS54425
Control: RM-ED047
Technical Specifications KDL-40HX853
SONY KDL-40HX853
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SONY KDL-40HX853, it is advisable to start with a careful external examination of internal and external elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. 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-40HX853 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the APS-324 power supply module of the TV. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power elements of transistors and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
Sometimes the SONY KDL-40HX853 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the FQLR400LT01 panel backlight LEDs converter, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
To check the health of the LEDs, as well as contact connections in the ruler circuit, it is necessary to disassemble the panel.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair of the main motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
We recommend the owners of the KDL-40HX853 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 KDL40/40/55HX850/853/855 Chassis AZ3F
The appearance of MainBoard 1-885-388-51 is shown in the figure below:1-885-388-51
1-885-388-51 can be used in TVs:
SONY KDL-46HX853 (Panel FQLR460LT01 A-1853-359-B), SONY KDL-40EX653 (Panel LTY400HM10), SONY KDL-40HX853 (Panel FQLR400LT01), SONY KDL-55HX753 (Panel LTY550HQ04), SONY KDL-46HX753 (Panel LTY460HQ05).
The appearance of the power supply
Main features of the device SONY KDL-40HX853:
Installed matrix (LED-panel) FQLR400LT01.
The matrix control uses the Timing Controller (T-CON) PYL2.
The LED driver ST4046RD-S01 is used to power the backlight LEDs, it is controlled by the AN37011B PWM controller.
The necessary supply voltages for all nodes of the SONY KDL-40HX853 TV are generated by the APS-324 power module or its analogs using CXD9969AP, MIP2H2 microcircuits.
MainBoard - the main board (motherboard) is a module 1-885-388-51, using microcircuits CXD4727GB, K4B2G1646C-HCH9, KFM4G16Q4B, SIL9287BCNU, GL850G, D2826ER, TPA6138, PS54425 and others.