Technical description and composition of the PHILIPS 32PHT4101 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PHT4101 / 60
Chassis / Version: TPN16.2E LA
Panel: TPT315B5-WHBN0.K REV: S8940A
LED backlight: GJ-2K16 D2P5-315 D307-V2.2
T-CON: 47-6001317 32HD Dual Gate_X-PCB-X0.0
LED driver (backlight): integrated into PSU
PWM LED driver: PF7708BS
MOSFET LED driver: AOD2922
Power Supply (PSU): 715G7734-P01-000-002H
PWM Power: PF6005AS
MOSFET Power: TK6A65D
MainBoard: 715G6947-M01-000-004T
IC MainBoard: NT72453, MX30LF1G08AA-T1, AD87588-LG48NAY
Tuner: ST42CS-2-E
Specifications 32PHT4101
PHILIPS 32PHT4101
General repair guidelines for TV LCD LED
Possible malfunctions
- PHILIPS 32PHT4101 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
In such cases, the fault should be sought first in the power supply module 715G7734-P01-000-002H. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (TK6A65D) and rectifier diodes in the converters for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually 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. PF6005AS PWM controllers, in the absence of visible damage or obvious short-circuit between the terminals, are checked by replacing with new ones, 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.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. 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 detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- 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 715G6947-M01-000-004T motherboard should be started by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - NT72453, MX30LF1G08AA-T1, AD87588-LG48NAY with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
The malfunction of the ST42CS-2-E 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.
Attention to users! Self-repair of a PHILIPS 32PHT4101 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram ---------------> PHILIPS 32PHT4101 Chassis TPN16.2E LA
The appearance of the MainBoard 715G6947-M01-000-004T is shown in the figure below:715G6947-M01-000-004T
The appearance of the power supply
Main features of the PHILIPS 32PHT4101 device:
Installed matrix (LED panel) TPT315B5-WHBN0.K REV: S8940A.
The matrix control uses the Timing Controller (T-CON) 47-6001317.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the PF7708BS PWM controller. As power elements of the LED driver, keys of the AOD2922 type are used.
The necessary supply voltages for all nodes of the PHILIPS 32PHT4101 television are generated by the 715G7734-P01-000-002H power module, or its analogs using PF6005AS microcircuits and TK6A65D type power switches.
MainBoard - the main board (motherboard) is a module 715G6947-M01-000-004T, using chips NT72453, MX30LF1G08AA-T1, AD87588-LG48NAY and others.
The ST42CS-2-E tuner provides television reception and channel tuning