Wednesday, 29 January 2020

REPAIR / SERVICING TV PHILIPS 40PFL5616H

Technical description and composition of the PHILIPS 40PFL5616H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 40PFL5616H / 60
Chassis / Version: L11M2.1E LA
Panel: LK400D3LB83 code: 130
T-CON: CPWBX RUNTK DUNTK4918TP ZA
LED driver (backlight): integrated into PSU
PWM LED driver: OZ9902GN
MOSFET LED driver: AOD450
Power Supply (PSU): PLDE-P017A HR-PSL40-2-MED (3PAGC20027A-R
PWM Power: LNK362PG (7), L6599AD
MOSFET Power: KF5N50FS, KF5N50
MainBoard: 715G4722-M1B-000-005B CBPFB4PBZ4S00
IC MainBoard: MT5366CVCG, MT5135AE, TMDS351, STA339B
Tuner: ENV57U03D5F
Control: Remote: 2422 549 90301, IR: GWA7.820.694-6 (V1.1) (HT)
Specifications 40PFL5616H
PHILIPS 40PFL5616H
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 40PFL5616H does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
With such manifestations, a malfunction is most likely to be detected in the PLDE-P017A power supply module. It is necessary to measure its output voltages and, if they are absent, check the power switches (KF5N50FS, KF5N50) and rectifier diodes for the probability of short circuit in the converters.
In the event of a breakdown in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM circuits (PWM) LNK362PG (7), L6599AD are usually checked by replacing with new ones, or obviously working.
- There is no image, there is sound, it reacts to the remote control, channels are switched. In some cases, the image appears when you turn on and immediately disappears.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. 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 enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 715G4722-M1B-000-005B motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its MT5366CVCG, MT5135AE, TMDS351, STA339B chips and other possible malfunctioning components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before changing the tuner ENV57U03D5F, 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
Attention to users! Self-repair of a PHILIPS 40PFL5616H TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!


Service manual and schematic diagram 40PFL5606H/60 Chassis L11M2.1E LA
 

FOR MODELS --------> 40PFL5206H/12, 40PFL5206H/58, 40PFL5606H/12, 40PFL5606H/58, 40PFL5606H/60, 40PFL5616H/60, 46PFL5606H/12, 46PFL5606H/58

 The appearance of MainBoard 715G4722-M1B-000-005B is shown in the figure below:
715G4722-M1B-000-005B
The appearance of the power supply
Main features of the PHILIPS 40PFL5616H device:
Installed matrix (LED-panel) LK400D3LB83 code: 130.
In matrix management, the CPWBX Timing Controller (T-CON) is used.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the OZ9902GN PWM controller. As power elements of the LED driver, keys of the AOD450 type are used.
The necessary supply voltages for all nodes of the PHILIPS 40PFL5616H TV are generated by the PLDE-P017A power module or its analogs using LNK362PG (7), L6599AD microchips and power switches of the KF5N50FS, KF5N50 type.
MainBoard - the main board (motherboard) is a module 715G4722-M1B-000-005B, using chips MT5366CVCG, MT5135AE, TMDS351, STA339B and others.
The tuner ENV57U03D5F provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SHARP
Model: LK400D3LB83
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1920x1080, FHD
Display Mode: ASV, Normally Black, Transmissive
Active Area: 885.6x498.15 mm