Technical description and composition of the PHILIPS 55PUS7809 TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 55PUS7809 / 60
Chassis / Version: QM14.3E LA
Panel: LC550EQE (PG) (F1)
T-CON: V14 TM120 UHD Ver 0.5
LED driver (backlight): integrated into PSU
Power Supply (PSU): FSP172-4FS01 310RLMOD00000171TP REV: 00
PWM Power: B117H (DIP-8 Standby)
MainBoard: 310431366873 3104 313 66873 704TQEPL009 300RASEL0
IC MainBoard: MT5591, H5TQ4G63AFR-PBCR, NT72314
Tuner: PE231ZP
Technical Specifications 55PUS7809
PHILIPS 55PUS7809
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 55PUS7809 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.
In some of these cases, a fault is detected in the FSP172-4FS01 power module. It is necessary to measure its output voltages, and in case of their absence (full or partial), it is necessary to check the serviceability of the power switches of the converters and rectifier diodes for the presence of a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can usually work abnormally in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) B117H (DIP-8 Standby), if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, there is sound, it responds to the remote control. Or the image may appear for a second when turned on and immediately disappears.
In such cases, the most likely malfunction of the LED backlight elements. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 310431366873 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - MT5591, H5TQ4G63AFR-PBCR, NT72314. Defective components should be replaced.
Before changing the tuner PE231ZP, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Once again, remind users! Attempts to independently repair the PHILIPS 55PUS7809 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Service manual and schematic diagram PHILIPS 55PUS7809/60 Chassis QM14.3E LA
The appearance of MainBoard 310431366873 is shown in the figure below:310431366873
310431366873 can be used in TVs:
PHILIPS 49PUS7809/60 (Panel LC490EQE (XG)(F1)), PHILIPS 55PUS7809/60 (Panel LC550EQE (PG)(F1)).
The appearance of the power supply
Main features of the PHILIPS 55PUS7809 device:
Installed matrix (LED-panel) LC550EQE (PG) (F1).
The matrix control uses the Timing Controller (T-CON) V14.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the PHILIPS 55PUS7809 television are generated by the FSP172-4FS01 power module, or its analogs using B117H microcircuits (DIP-8 Standby).
MainBoard - the main board (motherboard) is a module 310431366873, using chips MT5591, H5TQ4G63AFR-PBCR, NT72314 and others.
The tuner PE231ZP receives television programs and tunes to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC550EQE-PGF1
Type: a-Si TFT-LCD, Panel
Diagonal size: 55 inch
Resolution: 3840x2160, UHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 1209.6x680.4 mm
Surface: Antiglare (Haze 1%), Hard coating (2H)
Brightness: 400 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering), CIE1931 72%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: V-by-One 8 lane, 51 pins
Voltage: 12.0V