Technical description and composition of the PHILIPS 42PFL9603D TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 42PFL9603D / 10
Chassis / Version: Q529.1E LA
Panel: LC420WUF-SAA1
T-CON: 6870C-4200C
Inverter (backlight): integrated into PSU
PWM Inverter: UBA2071AS
Power Supply (PSU): 310430350815B 3104 313 61935B 3104 303 50815B
PWM Power: NCP1606B (PFC)
MOSFET Power: FCP11N60
MainBoard: 310430351024 3104 313 62144 3104 303 51024
IC MainBoard: PNX8541E / 2414 PA4941.00, 25P05VP, 25P20VP, 512E3A2CN6
Tuner: TD1716F / BHXP-4
Specifications 42PFL9603D
PHILIPS 42PFL9603D
General recommendations for repairing TV LCD
Possible malfunctions
- PHILIPS 42PFL9603D does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Most likely in this case, the main switching power supply (MPS) 310430350815B is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short-circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) UBA2071AS, 1606B (PFC), if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 310430351024 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - PNX8541E / 2414 PA4941.00, 25P05VP, 25P20VP, 512E3A2CN6 with new or obviously working ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages on the terminals of the TD1716F / BHXP tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Attention TV owners! Attempts at self-repair of PHILIPS 42PFL9603D are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual and schematic diagram 42PFL9603D/10 Chassis Q529.1E LA
Main features of the PHILIPS 42PFL9603D device:Installed matrix (LCD panel) LC420WUF-SAA1.
The matrix control uses the Timing Controller (T-CON) 6870C-4200C.
To power the backlight, a converter is used, combined with a power supply, controlled by a UBA2071AS PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 42PFL9603D TV are generated by the power supply module 310430350815B or its analogs using NCP1606B (PFC) microcircuits and FCP11N60 type power switches.
MainBoard - the main board (motherboard) is a module 310430351024, using chips PNX8541E / 2414 PA4941.00, 25P05VP, 25P20VP, 512E3A2CN6 and others.
The tuner TD1716F / BHXP-4 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC420WUF-SAA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1300: 1
Display Colors: 1.06B (8-bit + Dithering)
Response Time: 8 (MPRT)
Frequency: 120Hz
Lamp Type: 18 pcs EEFL Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V