Technical description and composition of the PHILIPS 42PFL9664H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 42PFL9664H / 60
Chassis / Version: Q549.6E LA
Panel: LC420WUF (SB) (M2) code 196
Inverter (backlight): DIV-003 (DIV-004)
Trans Inverter: 282040096A0C 0923G6 KG0
Power Supply (PSU): DPS-288CP 2722 171 00858
PWM Power: DNP005 (8), DDA006
MainBoard: 310431363432 3104.303.52272, 3104.313.63432
IC MainBoard: PNX85439EH, TDA9996, HYB18TC512160CF-2.5, M24C16, NAND01GW3B2BN6F
Tuner: HD1816AF / BHXP
Specifications 42PFL9664H
PHILIPS 42PFL9664H
General recommendations for repairing TV LCD
Repair of the PHILIPS TV with the Q549.6E LA chassis should begin with a careful external inspection of all its constituent elements and modules. 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. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Malfunctions of the DPS-288CP 2722 171 00858 power supply module can be expressed in different ways, for example, PHILIPS 42PFL9664H does not turn on at all and the control lamps on its front panel do not light up and do not blink, and there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
It should be remembered that the keys used in switching power supplies (SMPS) rarely fail without themselves, without any reasons that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM controller chip DNP005 (8), DDA006 can also cause a breakdown of the power switch of the converter.
In those cases when the PHILIPS 42PFL9664H TV has lost an image, and the sound is there and all the other functions are functional, there is a possibility of a malfunction of the inverter (converter for powering the backlight). 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. All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its LAN9420-NU, TDA9996HL7C1 chips and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Attention! For users and owners of 42PFL9664H TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
Service manual and schematic diagram 42PFL9664H/60 Chassis Q549.6E LA
The appearance of MainBoard 310431363432 is shown in the figure below:310431363432
310431363432 can be used in TVs:
PHILIPS 32PFL9604H / 60 (Panel LC320WUF (SB) (N1) code 181 p / n: 932226687682), PHILIPS 42PFL9664H / 60 (Panel LC420WUF (SB) (M2) code 196).
The appearance of the power supply
Main features of the PHILIPS 42PFL9664H device:
Installed matrix (LCD panel) LC420WUF (SB) (M2) code 196.
To power the backlight used inverter DIV-003. A transformer 282040096A0C 0923G6 KG0 is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 42PFL9664H TV are generated by the DPS-288CP power module, or its analogs using DNP005 (8), DDA006 microcircuits.
MainBoard - the main board (motherboard) is a module 310431363432, using chips PNX85439EH, TDA9996, HYB18TC512160CF-2.5, M24C16, NAND01GW3B2BN6F and others.
The HD1816AF / BHXP tuner provides television reception and channel tuning.
