Technical description and composition of the PHILIPS 32PFL7603S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7603S / 60
Chassis / Version: Q528.2E LA
Panel: V315B1-L05 Rev. C1
T-CON: V315B1-C05 12V, AS15-G
Inverter (backlight): VIT70043.50 Rev: 0
PWM Inverter: OZ964GN (20pin)
MOSFET Inverter: AOD604 (5pin)
Power Supply (PSU): DPS-182CP 31391287946
PWM Power: NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599 PWM resonant)
MainBoard: 313912363411 3139 123 63411
IC MainBoard: PNX8541E.
Tuner: TD1716F
Specifications 32PFL7603D
PHILIPS 32PFL7603S
General recommendations for repairing TV LCD
Like all other televisions, it is advisable to start PHILIPS 32PFL7603S / 60 with a careful inspection of both external and internal elements and modules. Visible damage to elements can sometimes suggest directions for troubleshooting even before the necessary measurements are taken. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Power Module Repair
In the case when the 32PFL7603S / 60 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely in this case the DPS-182CP 31391287946 power supply module is faulty. In the absence of swollen filter capacitors of the secondary rectifiers, Diagnostics of the power supply should always be started by checking the fuse and, if it is broken, the first thing to do is 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 a PWM controller in a single chip, are reliable enough 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.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
Inverter Repair
Sometimes the PHILIPS 32PFL7603S / 60 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the inverter itself, including the power supply unit (power supply unit).
In most cases, the diagnosis and repair of the VIT70043.50 Rev: 0 inverter is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or breaks in high-voltage circuits and during depressurization of lamps. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
In such cases, special care should be taken during diagnostics, 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.
Repair Main Board
On the motherboard FH 821.3 PL5.A PNX5050EH, in the event of a malfunction, you should first check the operation of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - PNX8541E .. Faulty components should be replaced.
Owners and users of the PHILIPS 32PFL7603S / 60 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
One of the typical defects of the PHILIPS 32PFL7603S / 60 TV can occur in the V315B1-L05 Rev. C1.
External manifestations: color distortion in the image as a negative in the image, light tones predominate. Typically, in such cases, the AS15-G gamma corrector is faulty. Another indicator of its malfunction is an excessively strong heating, which in practice allows you to do without measuring the voltage gradations of gray.
In most cases, replacing the AS15-G solves the problem.
It should be remembered that similar symptoms can cause faults in the column drivers of the panel, which is usually indicated by interference in the form of even vertical stripes on the screen. Then, after replacing the AS15-G, the situation does not change. Drivers are in loops and cannot be replaced. In this case, it is necessary to replace the glass panel.
Service manual and schematic diagram 32PFL7603S/60 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 DPS-182CP power supply module is made using the Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC is a Step-Up Converter based on the NCP1606 PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 32PFL7603S device:
Installed matrix (LCD panel) V315B1-L05 Rev. C1.
The matrix control uses the Timing Controller (T-CON) V315B1-C05.
The VIT70043.50 inverter is used to power the backlight, controlled by the OZ964GN PWM controller (20pin). As power elements of the inverter, keys of the AOD604 type (5pin) are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7603S TV are generated by the DPS-182CP power module or its analogs using NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599 PWM resonant) microcircuits.
MainBoard - the main board (motherboard) is a module 313912363411, using PNX8541E chips. and others.
The TD1716F tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V315B1-L05
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 18/6 (Tr / Td); 8.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V