Tuesday, 4 February 2020

REPAIR / SERVICING TV PHILIPS 65PUS9109

Technical description and composition of the PHILIPS 65PUS9109 TV, panel type and applicable modules. The composition of the modules.
PHILIPS LED
Model: 65PUS9109 / 60
Chassis / Version: QV14.1E LA
Panel: TPT650LS-FJ01
LED driver (backlight): integrated into PSU
Power Supply (PSU): FSP295-4FS01
MainBoard: 715RLPCB0000000303A, Z-SIDE: 715RLPCB0000000252
Specifications 65PUS9109
PHILIPS 65PUS9109
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 65PUS9109 TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
Most often, with such manifestations, the FSP295-4FS01 main power module is found to be faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches and rectifier diodes for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM), if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- 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.
As a rule, in such cases there is no display 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.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters, as a rule, light up a single 3-volt LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as a health indicator. In faulty LEDs, the zener diode will either be cut off or broken into short-circuit.
- 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 715RLPCB0000000303A 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).
It should be remembered! Attempts to independently repair the PHILIPS 65PUS9109 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!


Service manual and schematic diagram ---------------->  PHILIPS 65PUS9109 Chassis QV14.1E LA




 The appearance of MainBoard 715RLPCB0000000303A is shown in the figure below:
715RLPCB0000000303A
Main features of the PHILIPS 65PUS9109 device:
The matrix (LED panel) TPT650LS-FJ01 is installed.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the PHILIPS 65PUS9109 TV is carried out by the FSP295-4FS01 power module, or its analogues.
MainBoard - the main board (motherboard) is a module 715RLPCB0000000303A