Technical description and composition of the PHILIPS 32PFL5404 TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL5404 / 60
Chassis / Version: TPM3.1E LA
Panel: LC320WXE SBA1 p / n: 932226686682
T-CON: LC320WXE SBA1 6870C-0238B
Inverter (backlight): integrated into PSU
PWM Inverter: UBA2071AT (24pin)
MOSFET Inverter: 2SK4087LS
Trans Inverter: 80GL26T938-DN
Power Supply (PSU): 715G3308-2 996510025944
PWM Power: TNY277PN, NCP1271A (7)
MOSFET Power: 8N80
MainBoard: 715G3380-3 996510025945
IC MainBoard: MT8222TMMU
Tuner: TAFT-S710D
PHILIPS
Model: 32PFL5404 / 60
Chassis / Version: TPM3.1E LA
Panel: T315XW02 V.R code 001 p / n: 932226891682 // LC320WXE SBA1 005
Inverter (backlight): integrated into PSU
Trans Inverter: 80GL26T947 TK TMS94173CT
Power Supply (PSU): 715G3291-2 9965 100 23537 // 715G3308-2
PWM Power: TNY277PN (7), UBA2071AT (24), NCP1271A
MOSFET Power: K4097,
MainBoard: 715G3380-3 9965 100 23332
IC MainBoard: MT8222TMMU,
Tuner: TAFT-5710D
Control: 2422 549 02314
Specifications 32PFL5404
PHILIPS 32PFL5404
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 the 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 an active Power Factor Correction (CMC) circuit 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 turned on, but there are 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 feeding 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 the MainBoard 715G3380-3 is shown in the figure below:715G3380-3
715G3380-3 can be used in TVs:
PHILIPS 32PFL5614/60 (Panel LC320WUE (SA)(A1)), PHILIPS 32PFL5404/60 (Panel LC320WXE SBA1 p/n: 932226686682), PHILIPS 32PFL5404/60 (Panel T315XW02 V.R code 001 p/n: 932226891682 ), PHILIPS 32PFL5604/60 (Panel LC320WUE (SA)(A1)), PHILIPS 42PFL5604/60 (Panel LC420WUE-(SB)(A1) code 006).
The appearance of the power supply
Main features of the PHILIPS 32PFL5404 device:
Installed matrix (LCD panel) T315XW02 V.R code 001 p / n: 932226891682 or LC320WXE SBA1 005.
To power the backlight, a converter is used, combined with a power supply. The transformer 80GL26T947 TK TMS94173CT is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 32PFL5404 TV are generated by the 715G3291-2 power module or its analogs using TNY277PN (7), UBA2071AT (24), NCP1271A microcircuits, and K4097 type power switches,.
MainBoard - the main board (motherboard) is a 715G3380-3 module, using MT8222TMMU chips, and others.
The TAFT-5710D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 VR
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 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 (1 ch, 8-bit), 30 pins
Voltage: 12.0V