Wednesday, 16 September 2020

REPAIRING / SERVICING TV PHILIPS 32PFT5501

Technical description and composition of the PHILIPS 32PFT5501 TV, panel type and modules used. The composition of the modules.
PHILIPS LED
Model: 32PFT5501 / 60
Chassis / Version: QM16.4E LA
Panel: TPT315B5-FHBN0.K
LED backlight: GJ-2K16 D2P5-315 D307-V2.2
T-CON: HY320FHB-N00 47-6021051
LED driver (backlight): integrated into PSU
PWM LED driver: PF7708BS
MOSFET LED driver: AOD2916
Power Supply (PSU): 715G7364-P01-001-002M
PWM Power: PF6005AG, SY8113BADC
MOSFET Power: AOTF18N65
MainBoard: 715G7030-MOD-B01-005N
IC MainBoard: MT5593FPIJ, H5TQ2G63FFR-RDC, TAS5760LD
Tuner: TDSY-G480D
Control: WI-FI: 317GWFBT506LON
Specifications 32PFT5501
PHILIPS 32PFT5501
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- PHILIPS 32PFT5501 TV does not turn on and does not show any signs of operability at all. No response to the remote control and front panel control buttons.
With similar manifestations, a malfunction is most likely found in the power module 715G7364-P01-001-002M. Then we recommend measuring its output voltages and, if they are absent, you should check the serviceability of the power switches (AOTF18N65) and the rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits of the converter, it can usually work in an emergency mode in a short circuit mode, and with a short circuit in the power elements of the primary circuit, the mains fuse or current sensor in the source of the key is most often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers PF6005AG, SY8113BADC, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and immediately disappear.
In some of these cases, the malfunction is caused by the lack of display backlighting. Often the cause of a malfunction is the lack of current in the LED circuit, for example, their open or short circuit, or a violation of the contact connections of the connectors.
When trying to detect a break in the LED lines, you should take into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the 715G7030-MOD-B01-005N motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complex repair of MB (SSB) is possible only in a service center with the necessary equipment. Checking or replacing MT5593FPIJ, H5TQ2G63FFR-RDC, TAS5760LD elements requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by the warm-up method.
If you suspect a malfunction of the TDSY-G480D tuner, first of all, you need to make sure that the software is correct, as well as the presence of the required levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding terminals of the tuner.

If PHILIPS 32PFT5501 has no picture, but there is sound, often the TPT315B5-FHBN0.K display backlight simply does not work. Moreover, in LED TVs, the LEDs inside the panel usually fail, less often the LED driver.
In such cases, you can see a barely noticeable image when the external light hits the screen.
Replacing the LEDs requires disassembling the LCD panel TPT315B5-FHBN0.K - a process that requires experience and qualifications from the master. We do not recommend doing such work on your own to the owners of TVs and craftsmen who do not have experience in repairing LCD panels
If there is no image, and the backlight is on, the screen becomes slightly lighter when turned on, and in an open TV you can see light through the holes in the panel case.
In this case, the panel may also be faulty - damage to strips, loops, for example, as a result of moisture ingress after unsuccessful washing of the screen, the T-CON (Timing Controller) board may be faulty. But often the main board MainBoard 715G7030-MOD-B01-005N also turns out to be faulty; a software failure is also possible.
Then, first of all, you need to check the panel supply voltage, the fuses on the T-CON board, as well as the supply and reference voltages of the column and line drivers - VGH, VGL, Vcom.
If these measurements are within the normal range, it is necessary to trace the passage of LVDS signals from MainBoard 715G7030-MOD-B01-005N with an oscilloscope, as well as synchronizing signals to loops with drivers.
Flooded or unsuccessfully washed screens of LED TVs can be restored, in about half of the cases, usually if significant damage has not formed in the loops and panel strips.
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Attention to TV owners! Attempts to repair PHILIPS 32PFT5501 yourself are not recommended by the manufacturer and can lead to serious negative consequences!




DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>   Chassis QM16.4E LA for models  32PFH5501/88, 32PFT5501/12, 32PFS5501/12, 32PFT5501/60, 32PFS6401/12, 32PFS6401/60, 40PFH5501/88, 40PFT5501/12, 40PFS5501/12, 40PFT5501/60, 49PFH5501/88, 49PFT5501/12, 49PFS5501/12, 49PFT5501/60.


 

Additional MainBoard Repair
The appearance of the MainBoard 715G7030-MOD-B01-005N is shown in the figure below:
715G7030-MOD-B01-005N
External view of the power supply
The main features of the PHILIPS 32PFT5501 device:
Installed matrix (LED-panel) TPT315B5-FHBN0.K.
Matrix control uses the HY320FHB-N00 Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs and is controlled by a PF7708BS PWM controller. The keys of the AOD2916 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the PHILIPS 32PFT5501 TV is carried out by the 715G7364-P01-001-002M power module, or its analogs using PF6005AG, SY8113BADC microcircuits and AOTF18N65 power switches.
MainBoard - the main board (motherboard) is a 715G7030-MOD-B01-005N module, using MT5593FPIJ, H5TQ2G63FFR-RDC, TAS5760LD and others.
The TDSY-G480D tuner provides reception of television programs and tuning to channels.

Updating software (firmware, firmware).Version: 000.016.102.024, zip file, 913.8 MB, published October 4, 2018 version.Documentation:Brochure Version: 6.0.1, PDF file, 473.9 kB, published July 19, 2019Quick start guide PDF file, 2.8 MB, published April 10, 2016User manual PDF file, 3.3 MB, published May 9, 2017Files can be downloaded from the manufacturer's website for model 32PFT5501 / 60.


PHILIPS 32PFT5501 TV with LCD TPT315B5-FHBN0.K, 32 "(81 cm) 16: 9 format diagonal. The required screen brightness of 300 cd / m² is provided by LED backlighting.
TPT315B5-FHBN0.K matrix and MainBoard 715G7030-MOD-B01-005N software provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD).
TV model 32PFT5501 has built-in SMART software and Android TV operating system installed. The connection to the network can be carried out via Wi-Fi wireless connection. The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, HDMI x4, MHL, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The TV uses a 715G7364-P01-001-002M power supply.
Dimensions: with stand 727x483x204 mm, without stand 727x439x77 mm.
TV weight: with stand: 5.7 kg, without stand: 5.5 kg.
Attention! Panel TPT315B5-FHBN0.K LED-TV PHILIPS 32PFT5501 is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.