Technical description and composition of the PHILIPS 32PF9830 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PF9830 / 10
Chassis / Version: JL2.1E AA
Panel: LQ315T3LZ23
T-CON: CPWBX3255TPZE-1
Inverter (backlight): QKITS0129SNE2 (57) RDENC2203TPZB
Trans Inverter: Z1284, Z1285
Power Supply (PSU): 310432836291 3104 313 60632
PWM Power: MC34067P
MOSFET Power: STP15NK50ZFP
MainBoard: 3104_328_41234
IC MainBoard: PNX3000HL, PNX8550, PNX2015, M24C64,
Tuner: UV1318ST
Control: IR: 3104 313 60165
Specifications 32PF9830
PHILIPS 32PF9830
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the PHILIPS 32PF9830 / 10 TV, as well as other devices, with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. Specific external damage to the elements can sometimes prompt further actions to determine the malfunction of the TV and localize the defect before starting the necessary measurements and taking waveforms. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
Power Module Repair
In cases when the PHILIPS 32PF9830 / 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). First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail by itself for no reason, which should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked by replacement, and also other semiconductor elements (diodes, transistors, zener diodes).
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
Inverter Repair
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
Diagnostics and repair of the inverter are often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to block a defect, it needs to be locked.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Repair Main Board
On the motherboard 3104 328 41233, in case of a malfunction, you should first check the performance of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Once again, remind users! Attempts to self-repair a PHILIPS 32PF9830 / 10 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual and schematic diagram 32PF9830/10 Chassis JL2.1E AA
32PF9830/10, 37PF9830/10, 42PF9830/10.
PSU ---------------------> 32-37PF9830/10 Chassis JL2.1E AA
The appearance of MainBoard 3104_328_41234 is shown in the figure below:3104_328_41234
3104_328_41234 can be used in TVs:
PHILIPS 32PF9830 / 10 (Panel LQ315T3LZ23), PHILIPS 37PF9830 / 10 (Panel 37 inches).
The appearance of the power supply
Main features of the PHILIPS 32PF9830 device:
Installed matrix (LCD panel) LQ315T3LZ23.
The matrix control uses the Timing Controller (T-CON) CPWBX3255TPZE-1.
To power the backlight, an inverter QKITS0129SNE2 (57) is used. The transformer Z1284, Z1285 is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 32PF9830 TV are generated by the power supply module 310432836291, or its analogs using MC34067P microcircuits and power switches of the STP15NK50ZFP type.
MainBoard - the main board (motherboard) is a module 3104_328_41234, using chips PNX3000HL, PNX8550, PNX2015, M24C64, and others.
The UV1318ST tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: SHARP
Model: LQ315T3LZ23
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 23%), Hard coating (2H), Antireflection
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit), CIE1931 73%
Response Time: 12/12 (Tr / Td)
Frequency: 60Hz
Lamp Type: 18 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 37 pins
Voltage: 5.0V