Technical description and composition of the PHILIPS 32PF9966 TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PF9966 / 10
Chassis / Version: FTL2.4E AA
Panel: T315XW01
Inverter (backlight): DARFON 4H.V1448.129 / B1
Power Supply (PSU): 3104_328_36291, 3104 303 39562
MainBoard: 3104_313_60039 3104 313 60039 - 3104 337 00891
IC MainBoard: TDA9321H, SAA5801H, MSP3411G, TDA7490
Tuner: UV1318ST
Specifications 32PF9966
PHILIPS 32PF9966
General recommendations for repairing TV LCD
It is recommended that you start the diagnostics of a malfunction of the PHILIPS 32PF9966 / 10 TV, as well as all other electronic devices, with an external inspection of both external and internal elements and modules. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Power Module Repair
In cases when the PHILIPS 32PF9966 / 10 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the power module is most likely faulty or, what it happens a little less often - there is no processor power on the motherboard (a typical defect of some PHILIPS TVs). When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. When it is broken, the power switch and rectifier bridge diodes should be checked for avalanche (thermal) breakdown.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or breakage of the resistors in its bundle.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Inverter Repair
If the PHILIPS 32PF9966 / 10 TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
When diagnosing with disabled protection, special precautions must be observed, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Remember! Attempts to self-repair by users of the PHILIPS 32PF9966 / 10 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 32PF9966/10 Chassis FTL2.4E AA
The appearance of MainBoard 3104_313_60039 is shown in the figure below:3104_313_60039
The appearance of the power supply
Main features of the PHILIPS 32PF9966 device:
Installed matrix (LCD panel) T315XW01.
To power the backlight used inverter DARFON.
The necessary supply voltages for all nodes of the PHILIPS 32PF9966 TV are generated by the power supply module 3104_328_36291, or its analogs.
MainBoard - the main board (motherboard) is a module 3104_313_60039, using TDA9321H, SAA5801H, MSP3411G, TDA7490 and others.
The UV1318ST tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T315XW01 VH 2 Compatible model
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: MVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V