Technical description and composition of the PHILIPS 32PHH4109 TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PHH4109 / 60
Chassis / Version: TPN14.1E LA
Panel: TPT315B5-DXJSFE Rev-S1R
LED backlight: YX-32042000-3D552-0-7-3C2-0041 & YX-32042000-3D552-0-7-3C2-0710
T-CON: 32-37 R0W2.1 HD VER 0.1 6870C-0442B
LED driver (backlight): integrated into MainBoard
PWM LED driver: PF7903BS
MOSFET LED driver: AOD2610
Power Supply (PSU): integrated into MainBoard
PWM Power: LD7752B, SP6018S8RGB
MOSFET Power: TK13A65U,
MainBoard: 715G6079-C01-000-004X
IC MainBoard: NT72567, AON4421, RT7234GSP, SY8009BABC
Tuner: ST03CS-2-E
Control: Remote: 9965 900 09443, IR: 715G6167-R01-000-004X
Specifications 32PHH4109
PHILIPS 32PHH4109
General repair guidelines for TV LCD LED
Possible manifestations of defects
- PHILIPS 32PHH4109 does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
The malfunction in such cases should first be sought in the power elements of a switching power supply (IIP) - a network voltage converter (AC / DC), which in this model of TV is combined with the MainBoard 715G6079-C01-000-004X main board. 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 power switches (TK13A65U,) of converters and rectifier diodes for possible short circuit.
In the event of a breakdown in the secondary circuits of the converter, it can usually fail in short circuit mode, and in case of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM microcircuits (PWM) LD7752B, SP6018S8RGB are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In such cases, the most likely malfunction of the LED backlight elements. 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 indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 715G6079-C01-000-004X 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).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the ST03CS-2-E tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Owners of the 32PHH4109 TV are recommended for repairs to contact only qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!
Service manual and schematic diagram 32PHH4109/60 Chassis TPN14.1E LA
The appearance of the MainBoard 715G6079-C01-000-004X is shown in the figure below:715G6079-C01-000-004X
Main features of the PHILIPS 32PHH4109 device:
Installed matrix (LED-panel) TPT315B5-DXJSFE Rev-S1R.
The matrix control uses the Timing Controller (T-CON) 32-37.
To power the backlight LEDs, a converter is used, combined with the main board 715G6079-C01-000-004X, 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 LD7752B, SP6018S8RGB microchips and TK13A65U power switches,.
MainBoard - the main board (motherboard) is a module 715G6079-C01-000-004X, using chips NT72567, AON4421, RT7234GSP, SY8009BABC and others.
The ST03CS-2-E tuner provides television reception and channel tuning.