Technical description and composition of the PHILIPS 32PFL5404H TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL5404H / 12
Chassis / Version: Q543.1E LA
Panel: LK315 code 210
Inverter (backlight): PLHL-T807A (LIPS32) 272217100748 10 lamps
PWM Inverter: OZ9966GN
MOSFET Inverter: KMB054N40DA
Power Supply (PSU): PLHL-T807A (LIPS32) 272217100748
PWM Power: L6599D (PWM Resonant 16pin), FAN7530 (PFC), FSQ510
MOSFET Power: KHB5D0N50F
MainBoard: 313912364421 313912364431 3139 123 64421 313912364421 3139 123 64431
IC MainBoard: PNX85439E, DRX3926K-XK-A3, HYB18TC512160B2F-3S, TPA6111A2DGN, NAND01GW3B2BN6F,
Tuner: HD1816AF-BHXP
Specifications 32PFL5404H
PHILIPS 32PFL5404H
General recommendations for repairing TV LCD
Repair of the PHILIPS 32PFL5404H / 12 TV is advisable to start with a careful external examination. In this case, both external and internal components of the device should be inspected. It often happens that some damage to elements or connections helps determine the direction of the troubleshooting. 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 cases when the PHILIPS 32PFL5404H / 12 TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up or blink, and there are no sounds and no signs of operability at all, the power supply module 272217100748 PLHL is most likely faulty T807A (LIPS32) or, which is somewhat rarer, there is no processor power on the motherboard (a typical defect of some PHILIPS TVs). It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. In the event that the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the KHB5D0N50F converter, which are often found in a breakdown state in such situations.
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 L6599D, (16) FAN7530 (8), FSQ510 or breakage of resistors in her harness.
When using the Active Power Factor Correction (CMC) circuitry in the power module, the search for faulty elements is somewhat more complicated.
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 of the inverter PLHL-T807A (LIPS32) 272217100748 10 lamps can be difficult due to the protection being triggered, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or open circuits in the lamp power supply circuit, as well as their possible leakage. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
It should be remembered that when the protection is turned off, there is always a risk of failure of the power elements of the inverter during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Motherboard repair
One of the most common typical defects on the TPM3.1E LA chassis motherboard is caused by the use of the G973-120 linear stabilizer (G973-120ADJF11U) to power the processor in standby mode (3.3 V). Perhaps the problem is caused by poorly selected thermal conditions, or poor quality microcircuit.
External manifestations: the TV does not turn on and no indicators light up, although the power supply is working. At the output of the G973-120, the voltage is 3.3V underestimated or missing. It is advisable to replace it with a more powerful 78R33 using heat sink.
Owners and users of the PHILIPS 32PFL5404H / 12 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!
Service manual and schematic diagram ---------> 32PFL5404H/12 Chassis Q543.1E LA
Service manual and schematic diagram ---------> 32PFL5404 Chassis TPM3.1E LA
The appearance of MainBoard 313912364421 is shown in the figure below:313912364421
313912364421 can be used in TVs:
PHILIPS 32PFL5404H/12 (Panel LK315 code 210), PHILIPS 37PF5604H/60 (Panel LC370WUE(SB)(A1) code 201), PHILIPS 47PFL5604H/ (Panel TFT LCD470WUE-SB1A).
PSU Advanced
According to the conditions of compliance with modern world standards for household switching power supplies, the PLHL-T807A module provides for the use of a Power Factor Correction unit. The PFC circuit is a flyback converter based on the FAN7530 PWM controller. The reactance of an electrolytic capacitor of a line filter at a frequency of 50-60 Hz is usually not more than 20-30 ohms and its charge directly from the network through open diodes could reach tens of amperes per pulse if no filtering were applied.
As a result of the PFC conversion, an increased voltage on the capacitor (about 380V) cannot directly open the rectifier diodes, on the anode of which the voltage will always be slightly less (about 300V) and then its charging current will always be limited by the elements of the PWM controller. As a result, the envelope of the high-frequency pulses of the consumed current will repeat the shape and phase of the input sinusoidal voltage. The presence of an increased voltage (+ 380V) on the network capacitor indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 32PFL5404H device:
Installed matrix (LCD-panel) LK315 code 210.
To power the backlight used inverter PLHL-T807A (LIPS32), controlled by the PWM controller OZ9966GN. As power elements of the inverter, keys of the type KMB054N40DA are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFL5404H TV are generated by the PLHL-T807A power supply module or its analogs using L6599D (PWM Resonant 16pin), FAN7530 (PFC), FSQ510 microcircuits and KHB5D0N50F type power switches.
MainBoard - the main board (motherboard) is a module 313912364421, using chips PNX85439E, DRX3926K-XK-A3, HYB18TC512160B2F-3S, TPA6111A2DGN, NAND01GW3B2BN6F, and others.
The HD1816AF-BHXP tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SHARP
Model: LK315T3HA79
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: ASV, Normally Black, Transmissive
Active Area: 697.69x392.26 mm
Surface: Antiglare, Hard coating (2H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit)
Response Time: 7 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
