Technical description and composition of the PHILIPS 32PFL7803S TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL7803S / 60
Chassis / Version: Q528.2E LB
Panel: T315HW01 V.0
T-CON: 31T05-C02 T315HW01 V0 CTRL BD
Inverter (backlight): 4H.V2578.021-D
Power Supply (PSU): DPS-182CP 3139 128 79461
PWM Power: NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599)
MainBoard: 3139_123_63412 314302712467 130881 3139 123 63402 bd 3139 123 63412 wk812.2
IC MainBoard: PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW
Tuner: TD1716F / BHXP-3
Control: Remote: 2422 549 01833, IR: 3139_123_63273 v2 WK748.2
Specifications 32PFL7803D
PHILIPS 32PFL7803S
General recommendations for repairing TV LCD
Possible malfunctions
- The PHILIPS 32PFL7803S 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, the DPS-182CP power supply module usually fails. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits (PWM) NCP1606 (PFC), ICE3BS02, DDA001B (analog L6599) are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, 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 circuit should be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 3139_123_63412 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - PNX5050EH / M1, PNX8541E / 2414, NAND512W3A2CN6, TDA9832BTW. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before changing the tuner TD1716F / BHXP-3, if it is not possible to tune to television channels, you should make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to users! Self-repair of a PHILIPS 32PFL7803S TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram Chassis Q528.2E LB
The appearance of MainBoard 3139_123_63412 is shown in the figure below:3139_123_63412
3139_123_63412 can be used in TVs:
PHILIPS 32PFL5603D/12 (Panel LC320WXN-SAA1), PHILIPS 42PFL7603S/60 (Panel T420HW01 V.4 (AUOP) B p/n: 932225801682), PHILIPS 32PFL7433S/60 (Panel LC320WXD (SA)(B1)), PHILIPS 32PFL7803S/60 (Panel T315HW01 V.0).
The appearance of the power supply
Key Features of PHILIPS 32PFL7803S:
Installed matrix (LCD panel) T315HW01 V.0.
The matrix control uses the Timing Controller (T-CON) 31T05-C02.
To power the backlight, an inverter 4H.V2578.021-D is used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7803S 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 3139_123_63412, 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: T315HW01 V0
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 480 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V