Technical description and composition of the PHILIPS 40PFL8505H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 40PFL8505H / 60
Chassis / Version: Q551.1E LA
Panel: LK400D3LB23 SRPJ
T-CON: RUNTK4513TP
LED driver (backlight): integrated into PSU
PWM LED driver: SSC9512s (DDA014)
Power Supply (PSU): FSP175-4FS01 272217190246
PWM Power: A6069H (7), SSC9512s (DDA014)
MainBoard: 3104_313_64513 3104 313 64513 Part Number 314302714853
IC MainBoard: TPA3123D2, SiI9287BCNU, ST1S10PH
Tuner: 310432864983
Specifications 40PFL8505H
PHILIPS 40PFL8505H
General repair guidelines for TV LCD LED
It is advisable to start the repair of the PHILIPS 40PFL8505H / 60 TV with a careful external examination of both internal and external elements. Using visible changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of the defect before the necessary measurements are taken. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
Sometimes the PHILIPS 40PFL8505H does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the common power module FSP175-4FS01 272217190246. If it is working properly, you need to check the processor batteries on the SSB (Main Board). When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM A6069H (7) from the manufacturer.
If, when you turn on the TV, the image appears and immediately disappears, or is missing initially when you turn on, but the sound has other functions that work, there is a high probability of a malfunction of the LED driver (power converter for the backlight LEDs of the LK400D3LB23 SRPJ panel). In such cases, the general power module is also subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the LED driver should be checked.
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 diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
In the event of a malfunction on the PL5E motherboard, first of all, check the operation of all stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
If the TV works normally from external devices, but does not tune into television channels, the tuner may have a failure 310432864983. In such cases, you should first make sure that there are power supply voltages on its corresponding outputs, as well as power supply to varicaps (30-33V).
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
Service manual and schematic diagram 40PFL8505H/60 Chassis Q551.1E LA
The appearance of MainBoard 3104_313_64513 is shown in the figure below:3104_313_64513
3104_313_64513 can be used in TVs:
PHILIPS 40PFL8505H/60 (Panel LK400D3LB23 SRPJ), PHILIPS 40PFL8605H/60 (Panel LK400D3LB23 code 263 p/n: 932227887682), PHILIPS 40PFL9705H/60 (Panel LK400D3LB13 code 258), PHILIPS 40PFL8505C/60 (Panel LK400D3LB23).
The appearance of the power supply
Main features of the PHILIPS 40PFL8505H device:
The matrix (LED panel) LK400D3LB23 SRPJ is installed.
The matrix control uses the Timing Controller (T-CON) RUNTK4513TP.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PWM controller SSC9512s (DDA014).
The necessary supply voltages for all nodes of the PHILIPS 40PFL8505H TV are generated by the power module FSP175-4FS01, or its analogs using A6069H (7), SSC9512s (DDA014) microcircuits.
MainBoard - the main board (motherboard) is a 3104_313_64513 module, using TPA3123D2, SiI9287BCNU, ST1S10PH and other chips.
The tuner 310432864983 provides reception of television programs and tuning to channels.