PHILIPS LED
Model: 55PUS6262
Chassis / Version: TPM17.7E
Panel: TPT550U2-D072.L
LED driver (backlight): integrated into PSU
PWM LED driver: SSC9522S, TPV101AD
Power Supply (PSU): 715G8672-P03-000-002H
PWM Power: LD7591T (PFC), SSC3S121A
MOSFET Power: TK31A60W, TK11A65D
MainBoard: 715G8709-M01-B00-005K
IC MainBoard: MT5802VGEJ, M24128-BRMN6TP, THGBMDG5D1LBAIT
Tuner: TDSY-G480D & TDQS-A701F
Specifications 55PUS6262
PHILIPS 55PUS6262
General recommendations for TV LCD LED repair
Possible malfunctions
- PHILIPS 55PUS6262 does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.
In some of these cases, the fault is detected in the 715G8672-P03-000-002H power module. Its output voltages should be measured and, in their absence, the serviceability of the power switches (TK31A60W, TK11A65D) and rectifier diodes in the converters should be checked for possible breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the elements of the primary circuit, the mains fuse most often breaks off immediately and, less often, the current sensor in the source of the key.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) LD7591T (PFC), SSC3S121A are usually checked by replacing them with new ones, or knowingly working.
- There is no image, the screen is black, there is sound, when the screen is illuminated outside, you can sometimes see barely noticeable outlines of the image.
The most likely in these cases is a malfunction of the LED backlight. Usually the cause of the malfunction is in the breakage of the LEDs, or in the connectors of the LED strips, but sometimes the LED driver is also faulty.
It should be remembered that it is not possible to determine an open circuit in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then you need to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow opening the LED in the forward direction or dual LEds are used, then the PN transition of the emergency zener diode can indirectly serve as an indicator of serviceability. In the event of a malfunction of the LED-a, the PN junction of the Zener diode will either be cut off, or broken through in the K / Z.
If PHILIPS 55PUS6262 has no picture, but there is sound, often the TPT550U2-D072.L 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 with a successful hit of external light on the screen. Replacing the LEDs requires disassembling the LCD panel TPT550U2-D072.L - a process that requires experience and qualifications from the master.
I 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 the 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 the main board MainBoard 715G8709-M01-B00-005K often 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 use an oscilloscope to trace the passage of LVDS signals from MainBoard 715G8709-M01-B00-005K, 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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the 715G8709-M01-B00-005K 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). Repair of the board and replacement of microcircuits MT5802VGEJ, M24128-BRMN6TP, THGBMDG5D1LBAIT are carried out with the necessary equipment and the corresponding element base. Malfunctions associated with the use of BGA soldering technologies can be localized by the warm-up method.
If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the terminals of the TDSY-G480D & TDQS-A701F tuner match. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.
Attention to users! Self-repair of the PHILIPS 55PUS6262 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> PHILIPS 55PUS6262 Chassis TPM17.7E FOR MODELS: 43PUS6162/12, 43PUT6162/12, 43PUT6162/60, 43PUS6262/12, 43PUT6262/12, 49PUS6162/12, 49PUT6162/12, 49PUT6162/60, 49PUS6262/12, 49PUT6262/12, 50PUS6162/12, 50PUT6162/12, 50PUS6262/12, 50PUT6262/12, 55PUS6162/12, 55PUT6162/12, 55PUT6162/60, 55PUS6262/12, 55PUT6262/12, 65PUS6162/12, 65PUT6162/12, 65PUS6262/12, 65PUT6262/12.
Revision after repair of the backlight. Information from the master.
Reduce the backlight current from 2.2 A to 1.5 A. In both channels at pin 6 of the ISET of the TPV101AD microcircuits, I removed two 1.2 Ohm resistors out of six installed. R8145, R8146 and R8147, R8148 on board 715G8672.
Additional MainBoard Repair
The appearance of the MainBoard 715G8709-M01-B00-005K is shown in the figure below:
715G8709-M01-B00-005K
The main features of the PHILIPS 55PUS6262 device:
Installed matrix (LED panel) TPT550U2-D072.L.
A converter combined with a power supply is used to power the backlight LEDs, it is controlled by the SSC9522S, TPV101AD PWM controller.
The formation of the necessary supply voltages for all nodes of the PHILIPS 55PUS6262 TV is carried out by the 715G8672-P03-000-002H power module, or its analogs using LD7591T (PFC), SSC3S121A microcircuits and power switches of the TK31A60W, TK11A65D type.
MainBoard - the main board (motherboard) is a 715G8709-M01-B00-005K module, using MT5802VGEJ, M24128-BRMN6TP, THGBMDG5D1LBAIT microcircuits and others.
Tuner TDSY-G480D & TDQS-A701F provides reception of television programs and tuning to channels.
PHILIPS 55PUS6262 TV with LCD TPT550U2-D072.L, diagonal size 54.6 "(139 cm) 16: 9. The required brightness of the screen 350 cd / m² is provided by LED backlighting. The LCD panel is backlit from Direct LEDs LED.
TPT550U2-D072.L sensor and MainBoard 715G8709-M01-B00-005K software are capable of realizing images in the highest UHD quality at 3840x2160 resolution in 4K UHD, HDR standard. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
55PUS6262 TV is equipped with SMART software and the ability to work on the Internet. The connection to the network can be carried out via Wi-Fi wireless connection. Supported media file formats: MP3, WMA, MPEG4, HEVC (H.265), MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, HDMI x3, USB x2, Ethernet (RJ-45), Bluetooth, Wi-Fi 802.11n, WiDi, Miracast. A headphone output is provided. The digital tuner is capable of receiving television channels in the DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2 standards.
The TV uses a 715G8672-P02-000-002H power supply.
Dimensions: with stand 1244x775x262 mm, without stand 1244x731x78 mm.
TV weight: with stand: 16.3 kg, without stand: 15.4 kg.
Attention! Panel TPT550U2-D072.L LED-TV PHILIPS 55PUS6262 is an expensive and unreliable element.
Avoid any impacts 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.
