Technical description and composition of the PHILIPS 46PFL9706K TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 46PFL9706K / 02
Chassis / Version: Q551.2E LA
Panel: LC460D3LB73 (SRPJ)
T-CON: 3104 303 54152 TJ B03.1 21.2 S 310432867067
LED driver (backlight): RUNTK4948 TPZZ
MOSFET LED driver: STK7002
Power Supply (PSU): FSP198-6F01 2722 171 90578 REV: 02
PWM Power: LNK362, L6599
MOSFET Power: SPD04N60C3
MainBoard: S310432868591 3104 313 65392
IC MainBoard: NAND: 29F4G08ABAD
Tuner: TH2627
Specifications 46PFL9706K
PHILIPS 46PFL9706K
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 46PFL9706K TV does not turn on, does not respond to the remote control and the control panel buttons, does not light up or blink indicators.
Most likely in this case, the main switching power supply (IIPS) FSP198-6F01 is faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches (SPD04N60C3) and the rectifier diodes of the converters for a short circuit probability.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers LNK362, L6599, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Often in such cases, there is no LED backlight. Often the cause of the malfunction is the lack of current in the LED circuit, for example, an open or short circuit, or violation of the contact connections of the connectors.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the S310432868591 motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - NAND: 29F4G08ABAD board. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
If you suspect a malfunction of the TH2627 tuner, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and pulses of data exchange with the processor via the I2C bus at the corresponding tuner pins.
TV users and owners must remember that attempts to independently repair a PHILIPS 46PFL9706K TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service manual and schematic diagram --------------> PHILIPS 46PFL9706K Chassis Q551.2E LA
The appearance of the MainBoard S310432868591 is shown in the figure below:S310432868591
The appearance of the power supply
Main features of the PHILIPS 46PFL9706K device:
Installed matrix (LED-panel) LC460D3LB73 (SRPJ).
The matrix control uses the Timing Controller (T-CON) 3104.
The LED driver RUNTK4948 is used to power the backlight LEDs. As power elements of the LED driver, keys of the STK7002 type are used.
The necessary supply voltages for all nodes of the PHILIPS 46PFL9706K TV are generated by the FSP198-6F01 power supply module or its analogs using LNK362, L6599 microcircuits and power switches of the SPD04N60C3 type.
MainBoard - the main board (motherboard) is an S310432868591 module, using NAND chips: 29F4G08ABAD and others.
The TH2627 tuner provides TV reception and channel tuning.