Technical description and composition of the PHILIPS 32PFL7403S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7403S / 60
Chassis / Version: Q528.2E LA
Panel: T315XW02 V.F
T-CON: T315XW02 VF 06A95-1B
Inverter (backlight): F10V0411-01 (3)
PWM Inverter: BD9889FV
Trans Inverter: T879 Y7C4
Power Supply (PSU): DPS-182CP 3139 128 79461 REV.03F
PWM Power: NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599)
MainBoard: 313912363401V3 3139 123 63401V3 BD 3139 123 63411V3
IC MainBoard: CPU: PNX8541E / 2414, Scaler: PNX5050EH / M1
Tuner: TD1716F / BHXP-3
Specifications 32PFL7403D
PHILIPS 32PFL7403S
General recommendations for repairing TV LCD
Possible manifestations of defects
- The PHILIPS 32PFL7403S TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
With such manifestations, a malfunction is most likely to be detected in the DPS-182CP power supply module. It is necessary to measure its output voltages, and in case of their absence, check the operability of the power switches of the converters and rectifier diodes for the probability of short circuit.
In case of breakdowns of semiconductors in secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599), in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a 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.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 313912363401V3 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). When repairing an MB board, it is necessary to check its CPU components: PNX8541E / 2414, Scaler: PNX5050EH / M1. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
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 tuner TD1716F / BHXP-3. 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.
TV users and owners must remember that attempts to independently repair a PHILIPS 32PFL7403S TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 32PFL7403S/60 Chassis Q528.2E LA
The appearance of MainBoard 313912363401V3 is shown in the figure below:313912363401V3
313912363401V3 can be used in TVs:
PHILIPS 42PFL7603D / 12 (Panel T420HW01 V.4 code: 131), PHILIPS 32PFL7403S / 60 (Panel T315XW02 V.F).
The appearance of the power supply
Main features of the PHILIPS 32PFL7403S device:
Installed matrix (LCD panel) T315XW02 V.F.
The matrix control uses the Timing Controller (T-CON) T315XW02.
To power the backlight, an inverter F10V0411-01 is used, it is controlled by the BD9889FV PWM controller. The transformer T879 Y7C4 is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7403S TV are generated by the DPS-182CP power module or its analogs using NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599) microcircuits.
MainBoard - the main board (motherboard) is a module 313912363401V3, using CPU chips: PNX8541E / 2414, Scaler: PNX5050EH / M1 and others.
The tuner TD1716F / BHXP-3 provides TV reception and channel tuning.
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