PHILIPS LED
Model: 40PFL8605H / 60
Chassis / Version: Q551.1E LA
Panel: LK400D3LB23 code 263 p / n: 932227887682
T-CON: SK4513ZG0H0173 CPWBX RUNTK 4513TP
LED driver (backlight): integrated into PSU
PWM LED driver: LDDA003A (24pin) DDA002B (19pin)
MOSFET LED driver: 5N50C
Trans LED driver: 8TT001141 SRW-SBI4.1
Power Supply (PSU): FSP175-4FS01 - DPS-199DP A
PWM Power: A6069H (7), SSC9512s (DDA014), AS356M (OA) (8), DDA002B
MOSFET Power: 8N60C, 5N50C
MainBoard: 3104_313_64513 / 3104 313 64512/3104 313 64513 // 3104 328 14852
IC MainBoard: TPA3123D2, SiI9287BCNU, ST1S10PH, LD3985M25, TPS54283PWP, LNBH23Q,
Tuner: 3104 328 64982
Control: RC4498 WK1025
Specifications 40PFL8605H
PHILIPS 40PFL8605H
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular PHILIPS 40PFL8605H / 60, it is advisable to start with a careful external examination of internal and external elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences from the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the 40PFL8605H TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some PHILIPS models. In the general case, first of all, it is necessary to check the electrolytic capacitors of the secondary rectifier filters and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Options are 8N60C, 5N50C.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
In cases where the PHILIPS 40PFL8605H TV has lost an 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 backlight LEDs of the LK400D3LB23 panel code 263 9322 278 87682). 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.
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.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
In cases of attempts to repair the motherboard PL5E 3104 328 14852, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
If it is not possible to replace the MB board (SSB), you need to check the health of its elements - TPA3123D2, SiI9287BCNU, ST1S10PH, LD3985M25, TPS54283PWP, LNBH23Q,. Defective components should be replaced.
Before changing the tuner 3104 328 64982, if there is no possibility of tuning to television channels, you should make sure that there are supply voltages, including varicap power (30-33V), which must be measured on the corresponding tuner terminals.
Attention! For users and owners of 40PFL8605H TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.
Service manual and schematic diagram 40PFL8605H/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 40PFL8605H device:
Installed matrix (LED-panel) LK400D3LB23 code 263 p / n: 932227887682.
The matrix control uses the Timing Controller (T-CON) SK4513ZG0H0173.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a PWM controller LDDA003A (24pin) DDA002B (19pin). The transformer 8TT001141 SRW-SBI4.1 is installed in the LED driver converter. As power elements of the LED driver, keys of the 5N50C type are used.
The necessary supply voltages for all nodes of the PHILIPS 40PFL8605H TV are generated by the FSP175-4FS01 power supply module or its analogs using A6069H (7), SSC9512s (DDA014), AS356M (OA) (8), DDA002B and 8N60C, 5N50C type power switches.
MainBoard - the main board (motherboard) is a module 3104_313_64513, using microchips TPA3123D2, SiI9287BCNU, ST1S10PH, LD3985M25, TPS54283PWP, LNBH23Q, and others.
The tuner 3104 328 64982 provides reception of television programs and tuning to channels.