Technical description and composition of the PHILIPS 32PFL5614 TV, type of panel and applicable modules. The composition of the modules.PHILIPS
Model: 32PFL5614 / 60
Chassis / Version: TPM3.1E LA
Panel: LC320WUE (SA) (A1)
T-CON: 6870C-0266A (LC320WUN)
Inverter (backlight): integrated into PSU
PWM Inverter: UBA2071AT
Power Supply (PSU): 715G3214-2
PWM Power: 1271A, S66961S, TNY277PN
MainBoard: 715G3380-3
IC MainBoard: MT8222TMMU, WT6703F, MX25L6405DMI-12G, M24C32WP, HY5DU561622FTP-4
Tuner: TAFT-S710D
Control: 2422 549 02314
Specifications 32PFL5614
PHILIPS 32PFL5614
General recommendations for repairing TV LCD
Possible manifestations of defects
- The PHILIPS 32PFL5614 TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
In some of these cases, a malfunction is detected in the 715G3214-2 power module. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode without output voltages, and during short circuit in the power elements of the primary circuit, the mains fuse and / or current sensor at the source of the key usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) FSQ510, in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or inverter. If all the electrolytic capacitors of the filter according to the power supply of the inverter are working, make sure that the lamps are working, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 715G3380-3 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - MT8222TMMU, WT6703F, MX25L6405DMI-12G, M24C32WP, HY5DU561622FTP-4. Defective components should be replaced.
The malfunction of the TAFT-S710D tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Owners and users of the PHILIPS 32PFL5614 TV should 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 -------------------------> 32PFL5614/60 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 32PFL5614 device:
Installed matrix (LCD panel) LC320WUE (SA) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0266A.
To power the backlight, a converter is used, combined with a power supply, controlled by a UBA2071AT PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 32PFL5614 TV are generated by the 715G3214-2 power module or its analogs using 1271A, S66961S, TNY277PN microcircuits.
MainBoard - the main board (motherboard) is a 715G3380-3 module, using chips MT8222TMMU, WT6703F, MX25L6405DMI-12G, M24C32WP, HY5DU561622FTP-4 and others.
The TAFT-S710D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WUE-SAA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1300: 1
Display Colors: 1.06B (8-bit + Dithering)
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs EEFL Without Driver
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V