Technical description and composition of the PHILIPS 32PFT4100 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PFT4100 / 60
Chassis / Version: TPN15.1E LA
Panel: T320HVN05.6
LED backlight: GJ-2K15 D2P5-315 D307-V1 01L68
T-CON: T320HVN05.6 Ctrl BD 32T42-C07
LED driver (backlight): integrated into PSU
PWM LED driver: PF7708AS
MOSFET LED driver: SM1A23NSUC
Power Supply (PSU): 715G6550-P03-000-002H
PWM Power: PF6003
MOSFET Power: TK6A65D
MainBoard: 715G6947-M01-000-004Y
IC MainBoard: CPU: NT72453, NAND Flash: MX30LF1G08AA-T1 1Gb, SOUND: AUDIO AD87588-LG48NAY
Tuner: T42CS-2-E
Control: IR: 715G7055-R01-000-004Y
Specifications 32PFT4100
PHILIPS 32PFT4100
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 32PFT4100 TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
With such manifestations, the 715G6550-P03-000-002H power module usually fails. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches (TK6A65D) and rectifier diodes of converters 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.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM PF6003 controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- 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.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. Often the cause is a malfunction of the LEDs (open circuit, short circuit ...), or the connectors of the strips (strings), less often the LED driver is malfunctioning.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The TV does not turn on, the indicator indicates standby or operating mode, 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - CPU: NT72453, NAND Flash: MX30LF1G08AA-T1 1Gb, SOUND: AUDIO AD87588-LG48NAY. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before changing the T42CS-2-E tuner, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding tuner pins and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
TV users and owners need to remember that attempts to independently repair a PHILIPS 32PFT4100 TV without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
Service manual and schematic diagram ----------------> PHILIPS 32PFT4100 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).
The appearance of the power supply
Main features of the PHILIPS 32PFT4100 device:
The matrix (LED panel) T320HVN05.6 is installed.
The matrix control uses the Timing Controller (T-CON) T320HVN05.6.
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 32PFT4100 TV are generated by the power supply module 715G6550-P03-000-002H, or its analogs using PF6003 microcircuits and TK6A65D power switches.
MainBoard - the main board (motherboard) is a 715G6947-M01-000-004Y module, using CPU chips: NT72453, NAND Flash: MX30LF1G08AA-T1 1Gb, SOUND: AUDIO AD87588-LG48NAY and others.
The T42CS-2-E tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T320HVN05.6 CELL
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA3, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.5% (with Polarizer)
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit)
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
