Technical description and composition of the PHILIPS 42PFL7603S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 42PFL7603S / 60
Chassis / Version: Q528.2E LB
Panel: T420HW01 V.4 (AUOP) B p / n: 932225801682 // LC420WUE (SA) (A1)
T-CON: 6870C-4200C LC420WUN-SAA (LC420WUE-SAA1)
Inverter (backlight): integrated into PSU
PWM Inverter: DDA001AG (BG), LM324A, LM358
MOSFET Inverter: P13NK60ZFP
Power Supply (PSU): DPS-279BP G 272217100605
PWM Power: DDA001B (analog L6599), NCP1396 (PWM resonant), 1606B (PFC), 3BS02G (Standby)
MOSFET Power: 15N60C3, 2SK3569
MainBoard: 313912363402 PNL 3139 123 63402 BD 3139 123 63412 WK812
IC MainBoard: PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW
Tuner: TD1716F / BHXP-3
Control: Remote: RC2143801 / 01 3139 228 52871; IR: 3139-123-63274
Specifications 42PFL7603D
PHILIPS 42PFL7603S
General recommendations for repairing TV LCD
Repair of all electronic devices, including the PHILIPS TV, made on the basis of the Q528 2E LB chassis, it is advisable to start with an external examination of its external and internal elements. Visible damage to the elements can sometimes indicate the direction of the search for the defect even before the necessary measurements. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
In the case when the 42PFL7603S does not turn on, does not respond to the remote control and the front panel buttons, does not blink lights and does not show any signs of operability, the IPB 42 DPS-279BPG 272217100605 power supply module is probably defective in this case. check the stabilizer (converter) of the processor power supply on the motherboard When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the secondary rectifier filters zovatelya. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
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 can also cause a breakdown of the power switch of the converter.
If the PHILIPS 42PFL7603S does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU. When disabling protection in order to enable the diagnosis of a malfunction, special care should be taken, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
If the motherboard AS SSB_82M AL 313926857827 is faulty, first of all it is necessary to check all the linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes you can check the health of MB only by replacement.
It should be remembered! Attempts to repair the PHILIPS 42PFL7603S TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service manual and schematic diagram 42PFL7603S/60 Chassis Q528.2E LB
The appearance of MainBoard 313912363402 is shown in the figure below:313912363402
313912363402 can be used in TVs:
PHILIPS 42PFL7603S/60 (Panel T420HW01 V.4 (AUOP) B p/n: 932225801682), PHILIPS 32PFL7433S/60 (Panel LC320WXD (SA)(B1)).
PSU Advanced
The 42PFL7603S / 60 model uses a DPS-279BP power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a step-up converter based on the 1606B PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the PHILIPS 42PFL7603S device:
Installed matrix (LCD panel) T420HW01 V.4 (AUOP) B p / n: 932225801682 or LC420WUE (SA) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-4200C.
To power the backlight lamps, a converter is used, combined with a power supply unit, controlled by a PWM controller DDA001AG (BG), LM324A, LM358. As power elements of the inverter, keys of the type P13NK60ZFP are used.
The necessary supply voltages for all nodes of the PHILIPS 42PFL7603S TV are generated by the DPS-279BP power supply module or its analogs using DDA001B (analog L6599), NCP1396 (PWM resonant), 1606B (PFC), 3BS02G (Standby) microcircuits, and 15N60C3 power switches, 2SK3569.
MainBoard - the main board (motherboard) is a module 313912363402, using chips PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW and others.
The tuner TD1716F / BHXP-3 provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T420HW01 V4
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 40%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 15/5 (Tr / Td); 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
