Technical description and composition of the PHILIPS 32PFL7403D TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7403D / 12
Chassis / Version: Q528.2E LA
Panel: T315XW02 V.F
Inverter (backlight): F10V0411-01 (3)
PWM Inverter: BD9889FV, LM324, LM339
Trans Inverter: T879 Y7C4
Power Supply (PSU): DPS-182CP
PWM Power: NCP1606 (PFC), ICE3BS02 (PWM 8pin), DDA001B (analog L6599 PWM resonant)
MainBoard: 313912363411 3139 123 63411 314302712683 313926858987
IC MainBoard: PNX8541E / 2414, PNX5050EH / M1, TDA8932BTW, E2516ACSE, NAND512W3A2CN6, ISP1564H, LVC244A, AD8197A
Tuner: 3139 147 26571f TD1716F / BHXP-3
Specifications 32PFL7403D
PHILIPS 32PFL7403D
General recommendations for repairing TV LCD
Repair of the PHILIPS 32PFL7403D / 12 TV is advisable to start with a careful external examination. In this case, both external and internal components of the device should be inspected. It often happens that some damage to elements or connections helps determine the 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.
Power Module Repair
If the DPS-182CP power supply module fails, the external manifestations may be different, for example, the PHILIPS 32PFL7403D / 12 does not turn on at all and there is no indication of the indicator lights on the front panel. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with the NCP1606, ICE3BS02, DDA001B PWM controller in a single chip, are quite reliable and rarely fail for no reason. The reasons for the breakdown of the key should be sought 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.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of their operation.
Inverter Repair
If the PHILIPS 32PFL7403D / 12 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.
Repairing the inverter F10V0411-01 (3) is difficult because in case of any malfunction or abnormal situation, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety. Diagnostics become impossible and protection needs to be disabled.
It should be remembered that when the protection is turned off, there is always a risk of failure of the inverter power elements during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Repair Main Board
In cases of attempts to repair the motherboard EH 833.5 314302712683 313926858987, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - PNX8541E / 2414, PNX5050EH / M1, TDA8932BTW, E2516ACSE, NAND512W3A2CN6, ISP1564H, LVC244A, AD8197A, Tuner 3139 147 26571f TD1716F / BH. Defective components should be replaced.
Owners of the 32PFL7403D / 12 TV are recommended for repairing contact only qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 32PFL7403D/12 Chassis Q528.2E LA
The appearance of MainBoard 313912363411 is shown in the figure below:313912363411
313912363411 can be used in TVs:
PHILIPS 32PFL7403D/12 (Panel T315XW02 V.F), PHILIPS 32PFL7423D/12 (Panel LC320WXD (SA)(B1) code 154 p/n: 932226033682), PHILIPS 32PFL7603S/60 (Panel V315B1-L05 Rev. C1), PHILIPS 32PFL7613D/12 (Panel LC320WXN (SA)(B1)), PHILIPS 37PFL7603S/60 37PFL7603D/10 (Panel T370HW02 V.3), PHILIPS 42PFL5603D/12 (Panel T420HW01 V.4 code 131 p/n: 932225801682 ), PHILIPS 47PFL5603D/10 (Panel LC470WUF SA A1), PHILIPS 47PFL7603/10 (Panel V470H1-L05 code 159).
PSU Advanced
The 32PFL7403D / 12 model uses a DPS-182CP power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the NCP1606 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
Key Features of PHILIPS 32PFL7403D:
Installed matrix (LCD panel) T315XW02 V.F.
To power the backlight, an inverter F10V0411-01 is used, it is controlled by the PWM controller BD9889FV, LM324, LM339. The transformer T879 Y7C4 is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7403D TV are generated by the DPS-182CP power supply module or its analogs using NCP1606 (PFC), ICE3BS02 (PWM 8pin), DDA001B (analog L6599 PWM resonant) microcircuits.
MainBoard - the main board (motherboard) is a module 313912363411, using chips PNX8541E / 2414, PNX5050EH / M1, TDA8932BTW, E2516ACSE, NAND512W3A2CN6, ISP1564H, LVC244A, AD8197A and others.
Tuner 3139 147 26571f TD1716F / BHXP-3 provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 VF
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1800: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
