Technical description and composition of the PHILIPS 42PFL5614 TV, panel type and applicable modules. The composition of the modules.PHILIPS
Model: 42PFL5614 / 60
Chassis / Version: TPM3.1E LA
Panel: LC420WUE (SB) (A1) code 010
T-CON: T420HW04 V0 (42T06-C03)
Inverter (backlight): 715G3474-2
Trans Inverter: RCPF03E09B
Power Supply (PSU): 715G3474-2
MOSFET Power: TNY227PN (7)
MainBoard: 715G3380-2 (WK_913)
IC MainBoard: 080GL42T946 TK TMS94155CT-2 MT8222TMNU
Tuner: TAFT-S710D 9965 100 28665
Specifications 42PFL5614
PHILIPS 42PFL5614
General recommendations for repairing TV LCD
Repair of the PHILIPS TV with the TPM3.1E LA chassis should begin with a careful external inspection of all its components and modules. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the Z-SIDE CLK + P & S 42 power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain PHILIPS models. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. TNY227PN variants are possible (7).
It should be remembered that in the practice of repair, usually the power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the cause that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If PHILIPS 42PFL5614 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
Repair of the motherboard 715G3380-2 (WK_913) must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements 080GL42T946 TK, TMS94155CT-2, MT8222TMNU, Tuner TAFT-S710D. BGA chip malfunctions are usually easy to detect by warming up.
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, a voltage of 3.3 V is underestimated or missing. It can be replaced by a more powerful 78R33 using heat sink and some design changes.
We recommend the owners of the 42PFL5614 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 42PFL5614/60 Chassis TPM3.1E LA
The appearance of the power supplyMain features of the PHILIPS 42PFL5614 device:
Installed matrix (LCD panel) LC420WUE (SB) (A1) code 010.
The matrix control uses the Timing Controller (T-CON) T420HW04.
To power the backlight, an inverter 715G3474-2 is used. The transformer RCPF03E09B is installed in the inverter converter.
The necessary supply voltages for all nodes of the PHILIPS 42PFL5614 television are generated by the 715G3474-2 power module, or its analogs using TNY227PN type power switches (7).
MainBoard - the main board (motherboard) is a 715G3380-2 module, using 080GL42T946 TK TMS94155CT-2 MT8222TMNU chips and others.
The TAFT-S710D 9965 100 28665 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420WUE-SBA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 1.06B (8-bit + FRC)
Response Time: 5 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Without Driver
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V
