Technical description and composition of the POLARLINE 55PU11TC-SM TV, panel type and modules used. The composition of the modules.POLARLINE LED
Model: 55PU11TC-SM
Chassis / Version: TP.MT5522S.PC822
Panel: HV550QUB-H81
T-CON: 47-6021174
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
MainBoard: TP.MT5522S.PC822
IC MainBoard: CPU: MT5522ZHOJ
Specifications 55PU11TC-SM
POLARLINE 55PU11TC-SM
General recommendations for TV LCD LED repair
Possible manifestations of defects
- The POLARLINE 55PU11TC-SM TV does not turn on at all. Control lamps do not light up or blink. The TV on the remote control and control panel buttons does not respond.
A malfunction in such cases, first of all, should be looked for in the power elements of a switching power supply (SMPS) - a mains voltage converter (AC / DC), which in this TV model is combined with the MainBoard TP.MT5522S.PC822 main board. It is necessary to measure the output voltages in its secondary circuits, and in the event of their complete absence, the serviceability of the power switches and rectifier diodes should be checked for a possible breakdown (short circuit).
In case of breakdowns in the secondary circuits, the converter can operate in short-circuit mode, and in case of short-circuit in the elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in switching sources is sometimes caused by malfunctions of other circuit elements, for example, in the circuits supplying the PWM controller, frequency setting or damper, as well as in the circuits of Negative Feedback (OOS) stabilization. PWM controllers (PWM), if they do not have visible damage to the case and an outright short circuit between the terminals, are usually checked by replacing.
- 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 disappear immediately.
As a rule, in this case, the backlight of the LED panel is faulty. The reason can sometimes be in the power supply of the LEDs, but more often in their malfunction (breakdown or open circuit), sometimes in the violation of the contact connections of the LED strips.
It is impossible to check the LED bars for a break without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally a current source. Having disassembled the panel, it is necessary to check each LED separately. Chinese multimeters tend to light a single 3V LED in the forward direction. In the case of using dual 6-volt LEDs, the PN junction of its protective zener diode can serve as an indicator of serviceability. In faulty LEDs, the zener diode will either be cut off or broken through in the K / Z.
- 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 TP.MT5522S.PC822 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MT5522ZHOJ with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.
Attention to users! Self-repair of the POLARLINE 55PU11TC-SM TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
The main features of the POLARLINE 55PU11TC-SM device:Installed matrix (LED panel) HV550QUB-H81.
Matrix control uses Timing Controller (T-CON) 47-6021174.
A converter combined with the TP.MT5522S.PC822 main board is used to power the backlight LEDs.
The power module is combined with the MainBoard and is made according to the AC / DC flyback converter circuit.
MainBoard - the main board (motherboard) is a TP.MT5522S.PC822 module, using CPU chips: MT5522ZHOJ and others.
TV POLARLINE 55PU11TC-SM with LCD display, diagonal size 55 "(140 cm) 16: 9 format. The LCD panel of the TV is equipped with direct backlighting with rear LEDs - Direct LED.
There is a convenient function for recording TV programs on a USB-drive with subsequent viewing at another time (TimeShift).
You can watch movies in the highest UHD quality at a resolution of 3840x2160 pixels in 4K UHD, HDR. Image processing is performed using modern High Dynamic Range (HDR) technology with an extended range of brightness gradations.
55PU11TC-SM TV has built-in SMART software and preinstalled Android Operating System. Internet connection can be made via Wi-Fi wireless connection. Supported media file formats: MP3, MPEG4, HEVC (H.265), Xvid, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses NICAM stereo signal 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, VGA, HDMI 1.4a x3, USB x2, Ethernet (RJ-45), Wi-Fi 802.11n. A headphone output is provided.
The digital tuner is capable of receiving TV channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 1245x758x225 mm, without stand 1245x730x71 mm.
TV weight: 12 kg.
Attention! The panel of the POLARLINE 55PU11TC-SM LED TV is an expensive and unreliable element.
Do not allow 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 non-repairable.