Saturday, 28 November 2020

REPAIRING / SERVICING TV PHILIPS 65PUS9809

 Technical description and composition of the PHILIPS 65PUS9809 TV, panel type and modules used. The composition of the modules.
PHILIPS LED
Model: 65PUS9809 / 60
Chassis / Version: QV14.1E LA
Panel: LTA650FJ01
LED backlight: SVS650A02-REV9_12LED
T-CON: 55EU22BMB36LV0.2
LED driver (backlight): SSL650_3D24A
Power Supply (PSU): FSP524-5F01
MainBoard: 715RLPCB0000000303A & 715RLPCB0000000252
IC MainBoard: 88PG867RB0, LNBH26LSPQR, TDA8296HN,
Tuner: PE531AN
Specifications 65PUS9809
PHILIPS 65PUS9809
General recommendations for TV LCD LED repair
Possible malfunctions
- PHILIPS 65PUS9809 does not turn on, does not respond to buttons and the remote control, indicators on the front panel do not light or flash.
In such cases, the FSP524-5F01 power supply usually fails. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches and rectifier diodes in the converters for a short circuit.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying the PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing them with a known good one.
- There is no picture, but there is sound and all other functions work. Sometimes when you turn on the image appears and disappears for a second.
In these cases, the most likely problem is a malfunction of the LED backlight. The reason can be found in the malfunction of the LEDs, in the violation of the contact connections of the LED strips, or in the provision of their power supply (LED driver).
To check the health of the LED circuit, it is better to use a current source with a maximum voltage of 200V. We do not recommend using any voltage sources for this purpose. You can check each LED separately with a simple Chinese multimeter (powered by 9 volts) in the P-N transition test mode. If you connect the red probe of the multimeter to the anode of the LED, and the black one to its cathode, then the 3-volt LED will light up slightly, and in the opposite direction you can detect the transition of the emergency zener diode. The serviceability of the PN junction of the Zener diode indirectly indicates the serviceability of the LED-a
- 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 715RLPCB0000000303A 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). If it is not possible to replace the MB (SSB) board, it is necessary to check the serviceability of its elements - 88PG867RB0, LNBH26LSPQR, TDA8296HN,. Defective components must be replaced.

If PHILIPS 65PUS9809 has no picture, but there is sound, often the LTA650FJ01 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 LTA650FJ01 LCD panel, a process that requires experience and qualifications from the technician. We do not recommend doing such work on your own to 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 715RLPCB0000000303A turns out to be faulty, a software failure is also possible.
Then, first of all, you need 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 the normal range, an oscilloscope must track the passage of LVDS signals from MainBoard 715RLPCB0000000303A, 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.


Before changing the tuner PE531AN, if it is not possible to tune to television channels, you should make sure that there are supply voltages, which must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of data exchange between the tuner and the processor can be monitored with an oscilloscope.


I REMIND: Owners of the 65PUS9809 TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!

 

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 The appearance of the MainBoard 715RLPCB0000000303A is shown in the figure below:
715RLPCB0000000303A
The main features of the PHILIPS 65PUS9809 device:


Installed matrix (LED-panel) LTA650FJ01.
Matrix control uses Timing Controller (T-CON) 55EU22BMB36LV0.2.
The LED driver SSL650_3D24A is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the PHILIPS 65PUS9809 TV is carried out by the FSP524-5F01 power module, or its analogs.
MainBoard - the main board (motherboard) is a 715RLPCB0000000303A module, using the 88PG867RB0, LNBH26LSPQR, TDA8296HN microcircuits, and others.
Tuner PE531AN provides reception of TV programs and tuning to channels.
PHILIPS 65PUS9809 TV with LCD LTA650FJ01, diagonal 65 "(165 cm) in 16: 9 format. The required brightness of the screen of 500 cd / m² is provided by LED backlighting. The display technology of the model is implemented with LED backlighting.
There is support for 3D images with active (shutter) separation technology of the right and left channels.
The LTA650FJ01 sensor and MainBoard 715RLPCB0000000303A software are capable of delivering the highest UHD image quality at 3840x2160 4K UHD resolution.







TV model 65PUS9809 has built-in SMART software and Android 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, 2160p standards. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
Speaker power 80 W (2x15 + 50 W) is provided by 3 speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), audio x2, component, SCART, RGB, HDMI x4, USB x3, Ethernet (RJ-45), Wi-Fi 802.11n, Miracast ... 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, 3840x2160. 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 an FSP524-5F01 power supply.
Dimensions: with stand 1510x904x271 mm, without stand 1495x839x58 mm.
TV weight: with stand: 35.7 kg, without stand: 35 kg.
Attention! The LTA650FJ01 panel of the PHILIPS 65PUS9809 LED TV 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.