Technical description and composition of the PHILIPS 46PFL4988T TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 46PFL4988T / 60
Chassis / Version: TPM10.1E LA
Panel: TPT460H1-HVD02 code 211 p / n: 996590007711
LED backlight: 015B8000-A88-R00-9803
T-CON: TT-5546T20C01-3BN, AUO-12407, P301-16, M106-28, D9329
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S, PF7700A
Power Supply (PSU): 715G5778-P03-W21-002H 996590007713
PWM Power: SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby)
MainBoard: 715G5713-M01-000-005X Ver A 996590008218 705TXDSC9500T
IC MainBoard: CPU: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818
Tuner: TDSY-G230D
Control: 089G204A15N
Specifications 46PFL4988T
PHILIPS 46PFL4988T
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the PHILIPS 46PFL4988T / 60 TV, as well as the external elements of the case. Often, for certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In the case when the 46PFL4988T does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, the power supply module 715G5778-P03-W21-002H 996590007713 is probably faulty in this case. , it is necessary to check the power supply stabilizer (converter) of the processor on the motherboard. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should be started by checking the fuse and, if it is broken, it is necessary to First of all, check all the power semiconductor elements of the primary circuit - diodes and transistors for the likelihood of an avalanche or thermal breakdown.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The A6069H PWM controller chip can also cause a breakdown of the power switch of the converter.
If the PHILIPS 46PFL4988T does not have an image, but there is sound, there may be a malfunction of the panel backlight LEDs code 211 996590007711 or their power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair of the motherboard 996590008218 715G5713-M01-000-005X Ver A 705TXDSC9500T should begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the voltage of the varicaps of the tuner TDSY-G230D, which is usually within 30-33V, as well as other supply voltages at the terminals of the tuner.
Remember! Attempts to self-repair by users of the PHILIPS 46PFL4988T TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
SCHEMATIC MANUAL 46PFL4988T/60 Chassis TPM10.1E LA part1, part2, part3
46PFL4988T-60. Chassis TPM10.1e la.
Panel: TPT460H1-HVD02 Rev-S0F0M;
- T-con: 46T20-C01, T460HVD02.0 CTRL BD;
- psu: 715G5778-P03-W21-002M;
- Led: 015B8000-A88-R00-9803,
V-9803-A88-1R (LBM460M2304-AF-6(HF)(0)(R)),
015B8000-A88-L00-9803, V-9803-A88-1L (LBM460M2304-AE-6(HF)(0)(L);
- backlight 310432881331 351
The appearance of the MainBoard 715G5713-M01-000-005X is shown in the figure below:715G5713-M01-000-005X
PSU Advanced
The 46PFL4988T / 60 model uses a 715G5778-P03-W21-002H power supply unit using the PFC (Power Factor Correction) node - an active filter of higher harmonics of the consumed current. In fact, it is a boost converter based on the R2A20133ESP PWM controller, which eliminates the charge current of the rectifier filter's electrolytic capacitor from the network directly through the open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the PHILIPS 46PFL4988T device:
Installed matrix (LED panel) TPT460H1-HVD02 code 211 p / n: 996590007711.
The matrix control uses the Timing Controller (T-CON) TT-5546T20C01-3BN.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PF7900S, PF7700A PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 46PFL4988T TV are generated by the 715G5778-P03-W21-002H power supply module, or its analogs using SSC9522S (PWM Resonant), R2A20133ESP (PFC), A6069H (Standby) microcircuits.
MainBoard - the main board (motherboard) is a 715G5713-M01-000-005X module, using CPU chips: MT5580MPOI; DRAM: H5TQ2G83DFR; NAND Flash: TC58NVG2S3ETAI0; SOUND: STA3818 and others.
The TDSY-G230D tuner provides TV reception and channel tuning.