Technical description and composition of the PHILIPS 40PFL7605H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL7605H / 12
Chassis / Version: Q552.1E LA
Panel: LK400D3LA93 (SRPJ) B p / n: 932227619682
LED backlight: GT4374-2 K4475CS-MP, K4476CS-MP
T-CON: RUNTK4323TPZF
LED driver (backlight): integrated into PSU
PWM LED driver: DDA003A, DDA002B
Power Supply (PSU): DPS-199DP A B 272217100981 00982 analogues, FSP-175-4FS01
PWM Power: ICE3BS3LJ, NCP1608B (PFC), DDA002B
MainBoard: 3104_313_63643 3104 313 63643 // 310432862931, 310432862932
IC MainBoard: PNX85500, LD1117DT25, LAN8710A-EZKH, SII9287B, USB2513B, LM75BDP, TPA3120D2PWP, TPS53126PW, ST1S10PH.
Tuner: TH2603
Specifications 40PFL7605H
PHILIPS 40PFL7605H
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular PHILIPS 40PFL7605H / 12, it is advisable to start with a careful external examination of internal and external elements. It often happens that visible damage to elements or connections helps determine the direction of the troubleshooting. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
Malfunctions of the power supply module DPS-199DP A B 272217100981 00982 analogues, FSP-175-4FS01 can be expressed differently, for example, PHILIPS 40PFL7605H does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. It should be noted that with the same external manifestations, the processor power regulator (converter) may be faulty. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
The reasons for the breakdown of the power switch in pulsed power supplies (IIPS) can be different, for example, a malfunction of semiconductor cells or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the PWM controller chip or broken resistors in its bundle.
In cases where the PHILIPS 40PFL7605H TV has lost its image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the TFT-LCD LK400D3LA93 (SRPJ) B 932227619682 panel backlight LEDs). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
In most cases of lack of backlight, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or several LEDs does not work in one line, therefore, they are broken and should be replaced.
It is impossible to check the LED line for breaks 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.
The motherboard AS SSB TV550 EU7 310432862931, PL5B 310432862932 must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up constantly. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary.
We recommend the owners of the 40PFL7605H TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual and schematic diagram 40PFL7605H/12 Chassis Q552.1E LA
The appearance of MainBoard 3104_313_63643 is shown in the figure below:3104_313_63643
3104_313_63643 can be used in TVs:
PHILIPS 32PFL5405H/60 (Panel LC320WUY (SC)(A1) code 278 p/n: 9322 257 14743), PHILIPS 32PFL6605H/60 (Panel LC320EUH(SC)(A6) code 298 (286 )), PHILIPS 32PFL7605H/60 (Panel LC320EUH (SC)(A6) code 265 ), PHILIPS 32PFL7605H/60 (Panel LC320EUH(SC)(A2) p/n: 932227890682), PHILIPS 32PFL7605H/60 (Panel LC320EUH-SHA2 code 265 p/n: 932227890682), PHILIPS 37PFL5405H/60 (Panel LC370WUY(SC)(A1) code 277), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A1) p/n: 932227578682), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A2)), PHILIPS 40PFL7605H/12 (Panel LK400D3LA93 (SRPJ) B p/n: 932227619682), PHILIPS 42PFL5405H/12 (Panel LC420WUY), PHILIPS 42PFL5405H/60 (Panel LC420WUY (SC)(A1) code 276 p/n: 932227573682), PHILIPS 46PFL7605H/60 (Panel 9322 276 21682 code 271), PHILIPS 52PFL8605D/77
(Panel 52 ).
PSU Advanced
The DPS-199DP power module is installed in the 40PFL7605H / 12 TV using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the NCP1608B PWM controller does not allow the input rectifier filter's electrolytic capacitor to be connected to the network directly through open diodes when the charge current determines its reactance (about 15-30 ohms at a frequency of 50 Hz). As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the PHILIPS 40PFL7605H device:
Installed matrix (LED panel) LK400D3LA93 (SRPJ) B p / n: 932227619682.
The matrix control uses the Timing Controller (T-CON) RUNTK4323TPZF.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a PWM controller DDA003A, DDA002B.
The necessary supply voltages for all nodes of the PHILIPS 40PFL7605H TV are generated by the DPS-199DP power module or its analogs using ICE3BS3LJ, NCP1608B (PFC), DDA002B microcircuits.
MainBoard - the main board (motherboard) is a module 3104_313_63643, using chips PNX85500, LD1117DT25, LAN8710A-EZKH, SII9287B, USB2513B, LM75BDP, TPA3120D2PWP, TPS53126PW, ST1S10PH. and others.
The TH2603 tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SHARP
Model: LK400D3LA93
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
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.07B (10-bit)
Response Time: 6 (G to G)
Frequency: 120Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V