Technical description and composition of the PHILIPS 32PHT4200 TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PHT4200 / 12
Chassis / Version: TPN15.1E LA
Panel: TPT315B5
LED backlight: LB32080
T-CON: 32/37 R0W2.1 HD VER 0.
LED driver (backlight): integrated into PSU
PWM LED driver: PF7708AS
MOSFET LED driver: SM1A23NSUC
Power Supply (PSU): 715G6550-P04-000-002M
PWM Power: PF600
MOSFET Power: TK6A65D
MainBoard: 715G6947-M01-000-004Y
IC MainBoard: CPU: NT72453; NAND Flash: MX30LF1G08AA-T1 1Gb; SOUND: AUDIO AD87588-LG48NAY
Tuner: ST42CS-2-E
Specifications 32PHT4200
PHILIPS 32PHT4200
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 32PHT4200 TV does not turn on and does not show any signs of operability at all. There is no reaction to the remote control and control buttons from the front panel.
With similar manifestations, in some cases, the 715G6550-P04-000-002M power module is faulty. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches (TK6A65D) and the rectifier diodes of the converters for a short circuit probability.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the 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 (OOS) stabilization circuits. PWM PF600 controllers (PWMs), if they do not have visible damage to the chassis and open short-circuit between the terminals, are usually checked by replacement.
- 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.
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.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- 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 715G6947-M01-000-004Y 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). If it is not possible to replace the MB (SSB) card, you must check the health of its elements - CPU: NT72453; NAND Flash: MX30LF1G08AA-T1 1Gb; SOUND: AUDIO AD87588-LG48NAY. Defective components should be replaced.
Before replacing the ST42CS-2-E tuner, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
It should be remembered! Attempts to independently repair the PHILIPS 32PHT4200 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 32PHT4200/12 chassis TPN15.1E LA
The appearance of the MainBoard 715G6947-M01-000-004Y is shown in the figure below:715G6947-M01-000-004Y
715G6947-M01-000-004Y can be used in TVs:
PHILIPS 40PFT4100/60 (Panel TPT400LA-HN02.S Rev-SS01B code 018), PHILIPS 24PHT4000/60 (Panel TPM236WH2-BJ1P03.N REV.LC1E), PHILIPS 40PFT4101/60 (Panel TPT4001A-HN02.S / TPN16.2ELA), PHILIPS 32PHT4100/60 (Panel TPT315B5-0TU3A.Q code: 003).
Key Features of the PHILIPS 32PHT4200:
Installed matrix (LED panel) TPT315B5.
The matrix control uses the Timing Controller (T-CON) 32.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the PF7708AS PWM controller. As power elements of the LED driver, keys of the type SM1A23NSUC are used.
The necessary supply voltages for all nodes of the PHILIPS 32PHT4200 TV are generated by the 715G6550-P04-000-002M power module, or its analogs using PF600 microcircuits and TK6A65D power switches.
MainBoard - the main board (motherboard) is a module 715G6947-M01-000-004Y, using CPU chips: NT72453; NAND Flash: MX30LF1G08AA-T1 1Gb; SOUND: AUDIO AD87588-LG48NAY and others.
The ST42CS-2-E tuner provides television reception and channel tuning.