Technical description and composition of the PHILIPS 32PFL3168T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PFL3168T / 60
Chassis / Version: TPN10.1E LA
Panel: LC320DXE (SF) (R1)
LED backlight: 6916L-1204A
LED driver (backlight): integrated into MainBoard
PWM LED driver: PF7903BS
MOSFET LED driver: AOD2610
Power Supply (PSU): integrated into MainBoard
PWM Power: SP6018S8RGB, LD7752B
MOSFET Power: AOB298L, TK13A65U
MainBoard: 715G6079-C0D-000-004K
IC MainBoard: NT72567BG-BA NAND FLASH: K9F1G08U0D, RT7234GSP, SY8009BABC, HC4052
Tuner: ST03CS-2-E
Specifications 32PFL3168T
PHILIPS 32PFL3168T
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 32PFL3168T does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
In such cases, the common power source is often faulty - an AC / DC voltage converter, which is combined with elements of the main board 715G6079-C0D-000-004K. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (AOB298L, TK13A65U) and rectifier diodes in the converters for a short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often 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) SP6018S8RGB, LD7752B, 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 and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The most likely in these cases is a malfunction of the LED backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the motherboard 715G6079-C0D-000-004K should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - NT72567BG-BA NAND FLASH: K9F1G08U0D, RT7234GSP, SY8009BABC, HC4052 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
The malfunction of the ST03CS-2-E tuner is established after checking the software and all the supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
TV users and owners need to remember that attempts to self-repair a PHILIPS 32PFL3168T TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram 39PFL4398T/60 Chassis TPN10.1E LA
MODELS 20PFL3108H/12, 22PFL3108H/60, 24PFL3108H/12, 24PFL3108H/60, 32PFL3088H/12, 32PFL3148H/12, 32PFL3168H/12, 32PFL3168T/60, 32PFL3178T/60, 32PFL3188H/12, 32PFL3188K/12, 32PFL3188T/60, 39PFL3088H/12, 39PFL3188H/12, 39PFL4398H/12, 39PFL4398T/60, 40PFL3088H/12, 40PFL3138H/12, 40PFL3148H/12, 40PFL3188H/12, 40PFL3188T/60, 40PFL3198T/60, 42PFL3188H/12, 42PFL4398H/12, 42PFL4398T/60, 47PFL3188H/12, 47PFL3188T/60, 47PFL3198H/12, 47PFL3198T/60, 47PFL4398H/12, 47PFL4398T/60.
Power and Led driver 715G6079-C0D-000-004K Chassis TPN10.1E LA
The appearance of the MainBoard 715G6079-C0D-000-004K is shown in the figure below:715G6079-C0D-000-004K
715G6079-C0D-000-004K can be used in TVs:
PHILIPS 32PFL3188T/60 (Panel TPT315B5-EUJFFA REV:S1D code 007 p/n: 996590007793), PHILIPS 39PFL4398T/60 (Panel TPT390J1-HVD03 code 014 or 008 p/n: 996590007997), PHILIPS 32PFL3168T/60 (Panel LC320DXE (SF)(R1)).
Main features of the PHILIPS 32PFL3168T device:
Installed matrix (LED-panel) LC320DXE (SF) (R1).
To power the backlight LEDs, a converter is used, combined with the main board 715G6079-C0D-000-004K, controlled by the PF7903BS PWM controller. As power elements of the LED driver, keys of the AOD2610 type are used.
The power module is combined with the MainBoard and is made according to the flyback AC / DC voltage converter circuit using SP6018S8RGB, LD7752B microcircuits and power switches of the AOB298L, TK13A65U type.
MainBoard - the main board (motherboard) is a 715G6079-C0D-000-004K module, using the NT72567BG-BA NAND FLASH chips: K9F1G08U0D, RT7234GSP, SY8009BABC, HC4052 and others.
The ST03CS-2-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320DXE-SFR1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V