Technical description and composition of PHILIPS 49PUS6501 TV, type of panel and modules used. Module composition.
Composition
Specifications
PHILIPS 49PUS6501
LCD TV LED Smart TV UHD 49PUS6501 | Year of manufacture: 2016
Screen diagonal: 49" (124 cm)
Aspect ratio: 16:9
Resolution: 3840x2160
LCD panel type: TPT490U2-EQLSJA.G
LED backlight: Yes
Smart: yes. Wi-Fi support: yes
Operating system: Android TV
Picture-in-Picture (PIP): There is
Support HD: 4K UHD
Brightness: 400 cd/m2
Progressive scan: Yes
Digital tuner: DVB-T, DVB-T2, DVB-C, DVB-S
Teletext: Yes
Multimedia: MP3, WMA, MPEG4, MKV, JPEG
Sound stereo: there is
Sound Power: 20W (2x10W)
Acoustics: two speakers
Interface: AV, Audio x2, Component, SCART, HDMI x4, MHL, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n
Headphone jack: yes
TV weight: with stand 12.5 kg
without stand: 12 kg
Dimensions: with stand 1099x693x220mm
without stand 1099x643x79 mm
PHILIPS LED
Model: 49PUS6501/12
Chassis/Version: QM16.3E
Panel: TPT490U2-EQLSJA.G
LED driver (backlight): integrated into PSU
PWM LED driver: SSC9522S, TPV101D
Power Supply (PSU): 715G6973-P01-007-002M // 715G6973-P02-007-002M
PWM Power: SSC2005S, LD5532, AOZ3015AI
MOSFET Power: TK18A60V, TK11A65D
MainBoard: 715G7772-M01-B00-005K
IC MainBoard: CPU: MT5593UGIJ, THGBMBG7D2KBAIL
CPU: TDSY-G480D & TDQS-A701F
General advice about LCD LED TV repair
Possible defects
- PHILIPS 49PUS6501 does not turn on or show any signs of working at all. Indicators are not blinking and does not respond to the control buttons.
With such manifestations, the fault is most likely found in the power module 715G6973-P01-007-002M. It is necessary to check the presence of its output voltages and in case of their complete absence check the power keys (TK18A60V, TK11A65D) and the rectifier diodes for possible short circuit.
If the diodes in the secondary circuits breakdown, the inverter may operate in the short-circuit fault mode without output voltages, and if the primary circuit power elements are shorted, the mains fuse and/or the current sensor at the source of the key is usually blown.
Mos-Fet power switches used in switching power supplies sometimes fail due to the failure of some other element that can take it out of key mode, or cause the switch to exceed its maximum allowable parameters. These can be elements that feed the PWM controller, the frequency-retaining or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers SSC2005S, LD5532, AOZ3015AI, in the absence of visible damage or outright short circuits between the pins are checked by replacing them with new or known good ones.
- No image, sound, there is, the remote control responds. Or just after switching on for a second the image can appear and then disappear.
Faulty usually in these cases is the backlight of the matrix (LED panel). The cause can sometimes be in the power LEDs, but more often in their failure (breakdown or breakage), sometimes in violation of the contact connections of the LED strips.
It is impossible to detect a breakage in the line of LEDs without disassembling the panel with a simple multimeter. LEDs are connected in series and to open their transitions, you will need a voltage of several tens of volts. Ideally a current source would be suitable for this purpose. You can open up the panel and check each LED separately. Usually, Chinese multimeters will light up one 3 volt LED slightly if you connect the probes to it in the forward direction (red probe to the anode, black probe to the cathode). For twin 6-volt LEDs, the PN junction of its faulty regulator can be a good indicator. If the LED is faulty, it will either be open or shorted.
If PHILIPS 49PUS6501 has no picture but has sound, often the display backlight of TPT490U2-EQLSJA.G. is simply not working. Moreover, in LED TV sets the LEDs inside the panel are usually out of order, less often the LED-driver.
In such cases, you can see a faintly visible image when external light hits the screen.
To replace the LEDs requires disassembly of the LCD panel TPT490U2-EQLSJA.G - the process requiring the master of experience and expertise. We do not recommend to perform such works by yourself to owners of TV sets and craftsmen who have no experience in LCD panel repair.
READ HOW TO REPAIR THE TV LED BACKLIGHT --------------> HERE.
If there is no image, but backlighting works - the screen becomes slightly lighter when the TV is switched on, and in the open TV you can see the light through the holes in the body of the panel.
In this case the panel may be defective - damage to the strips, cables, for example, as a consequence of moisture after an unsuccessful washing of the screen, the T-CON board (Timing Controller) may be defective. But quite often the MainBoard 715G7772-M01-B00-005K is defective, also software failure is possible.
Then first it is necessary to check the panel supply voltage, 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 normal limits, you need to trace by oscilloscope the LVDS signals from MainBoard 715G7772-M01-B00-005K, as well as synchronizing signals to driver stubs.
Flooded or badly washed LED TV screens can be repaired in about half of the cases, usually, if there is no significant damage to the hinges and slats of the panel.
- The TV set does not enter the operating mode, the remote control is unresponsive. Front panel LED is either constantly on or is blinking.
Repair or diagnostic of the motherboard 715G7772-M01-B00-005K should begin with checking the stabilizers and power converters necessary to power the chips and matrix. If necessary, software (software) should be updated or replaced. Complex repair of MB board (SSB) in some cases is possible and practiced by repairers. To do this, you should check and, if necessary, replace elements of the CPU: MT5593UGIJ, THGBMBG7D2KBAIL. Faulty BGA chips are usually easy to detect by heating.
Before replacing the TDSY-G480D & TDQS-A701F tuner, if there is no tuning to the TV channels, you should check the supply voltages, which should be measured at the respective pins of the tuner and the software should be checked for correctness. The tuner-to-processor communication pulses can be checked with an oscilloscope
Warning to the users! Self-repair of the PHILIPS 49PUS6501 without the appropriate qualification and necessary
experience can lead to its complete unrepairability!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PHILIPS 49PUS6501 Chassis QM16.3E FOR MODELS 43PUS6501/12, 43PUS6501/60, 43PUS6551/12, 43PUS6401/12, 43PUS6401/60,
43PUT6401/12, 49PUS6401/12, 49PUT6401/12, 49PUS6401/60, 49PUS6501/12,
49PUS6501/60, 49PUS6551/12, 49PUS6561/12, 49PUS6581/12, 49PUS7101/12,
49PUS7101/60, 49PUS7181/12, 55PUS6401/12, 55PUT6401/12, 55PUS6401/60,
55PUS6501/12, 55PUS6501/60, 55PUS6551/12, 55PUS6561/12, 55PUS6581/12,
55PUS7101/12, 55PUS7101/60, 55PUS7181/12, 65PUS6521/12, 65PUS6521/60,
65PUS7101/12, 65PUS7601/12, 75PUS7101/12, 75PUS7101/60..
Refinement after repair of the backlight. 715G6973-P01-007-002M, TPV101D. Information from the master.
Decrease backlight current from 850 mA to 550 mA - I increased the ratings of resistors R8165 and R8166 in the current sensor LED driver on the board 715G6973-P01-007-002M.
715G6973-P01-007-002M current backlight
Limit the backlight current. 715G6973-xx-xx-xxx, SSC9522S, TPV101D. General Information.
To decrease the backlight current in TV's with the 715G6973 power supply and SSC9522S, TPV101D chips, increase the total resistance from pin 6 of the ISET to the cabinet for each channel equally for all channels, for example by removing one resistor from each assembly.
715G6973 current backlight.
Ways to limit the current in LED backlight drivers:
There
is a lot of information on the Internet about ways to limit the current
in the LED backlighting for different TVs and LED drivers. A lot of it
is written plausibly but sometimes it is written by people far from
electronics in order to publish any popular content on hot topics to
boost web-sites ratings.
It's impossible to talk about each case
separately within one article, because even similar models may have
different panels and different boards with their own driver variants.
But there are basic principles that are clear to craftsmen with even minimal knowledge and skill.
Other popular, complex and controversial current limit cases will be published as information becomes available.
There are three basic ways to reduce the backlight current.
1. By increasing the resistance of the LED current sensor - a low-resistance measuring resistor in the cathode (LED-) circuit.
2. Increasing the ratings of the resistors on the ISET (current setting) input of the LED driver chip.
3. changing the resistor ratings in the divider on the ADIM (Dimming) control input.
The fundamental difference between input ISET and ADIM is that ISET - input inverted, as FB, and ADIM - direct.
More on MainBoard Repair
The MainBoard 715G7772-M01-B00-005K is shown in the figure below:
715G7772-M01-B00-005K
MainBoard Appearance
The main features of PHILIPS 49PUS6501:
A matrix (LED panel) TPT490U2-EQLSJA.G is installed.
To power the LED backlight applied the converter, combined with a power supply, controlled by a PWM controller SSC9522S, TPV101D.
Required supply voltages for all PHILIPS 49PUS6501 TV assemblies are generated by a power supply module 715G6973-P01-007-002M 
or its analogues using SSC2005S, LD5532, AOZ3015AI chips and power switches TK18A60V, TK11A65D.
MainBoard - the main board (motherboard) is a module 715G7772-M01-B00-005K, using CPU chips: MT5593UGIJ, THGBMBG7D2KBAIL and others.
The TDSY-G480D & TDQS-A701F tuner allows you to receive TV programs and tune to channels.
PHILIPS 49PUS6501 TV with TPT490U2-EQLSJA.G LCD display, size diagonally 49" (124 cm) in a 16:9 aspect ratio. The required brightness of 400 cd/m² is provided by an LED backlight. In the technology of manufacture of the display model is implemented LED backlighting.
Matrix TPT490U2-EQLSJA.G and MainBoard software 715G7772-M01-B00-005K able to realize the image in the highest quality UHD at 3840x2160 pixels in 4K UHD standard.
The 49PUS6501 has built-in SMART software and the Android TV Operating System. Connection to the network can be made via Wi-Fi wireless connection. Supported media formats: MP3, WMA, MPEG4, MKV, JPEG.
The speaker system has a sound power of 20 W (2x10 W) provided by two speakers. NICAM stereo signal processing system and Sound Surround surround sound function are used.
External interface (connection to other devices) is supported by standard inputs and outputs: antenna input (RF), AV, audio x2, component, SCART, HDMI x4, MHL, USB x3, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n. There is a headphone output. The digital tuner is able to receive TV channels in the standards DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2.
The TV uses a power supply 715G6973-P02-007-002M.
Overall dimensions: with stand 1099x693x220 mm, without stand 1099x643x79 mm.
TV weight: with stand 12.5 kg, without stand 12 kg.
Warning. The panel TPT490U2-EQLSJA.G of PHILIPS 49PUS6501 LED TV is an expensive and unreliable part of it.
Avoid any kind of impact on the glass and pressure on the screen surface to avoid damaging the LED panel!
Also it is not safe to get liquid on the screen. Sometimes one drop is enough if it drips down the glass onto the cables and the TV becomes unrepairable.