Technical description and composition of the PHILIPS 42PFS7309 TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 42PFS7309 / 60
Chassis / Version: TPM14.2E LA
Panel: LC420EUF (PG) (F1)
LED backlight: 6922L-0111A
T-CON: 6870c-04828 V14 TM240 Control_Ver 0.1
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900S, PF7702D
MOSFET LED driver: SM1F03NSFPC
Power Supply (PSU): 715G6385-P01-000-002E
PWM Power: LCS700LG, LD7752B, LD7591T
MOSFET Power: TK18A60V, TK13A65U
MainBoard: 715G6080-M0D-000-005K
IC MainBoard: MT5591IVDJ, CAT24C128WI, K9F4G08U0D-SIB0, KLM4G1FE3B, STA381BWTR
Tuner: TDSY-G380D, SUT-ZE221ZN (CXD2839ER)
Control: Remote: YKF352-002
Specifications 42PFS7309
PHILIPS 42PFS7309
General repair guidelines for TV LCD LED
Possible malfunctions
- PHILIPS 42PFS7309 does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
With such manifestations, the 715G6385-P01-000-002E power module usually fails. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (TK18A60V, TK13A65U) and rectifier diodes for possible partial or complete breakdown.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM) LCS700LG, LD7752B, LD7591T, if they do not have visible damage to the case and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
Often in such cases, there is no LED backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 715G6080-M0D-000-005K motherboard should begin by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MT5591IVDJ, CAT24C128WI, K9F4G08U0D-SIB0, KLM4G1FE3B, STA381BWTR and replace the failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the tuner TDSY-G380D, SUT-ZE221ZN (CXD2839ER). It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Attention TV owners! Attempts at self-repair of PHILIPS 42PFS7309 are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual and schematic diagram ------> PHILIPS Chassis TPM14.2E LA,
Models: 32PFS5709/12, 32PFK5709/12, 32PFK6509/12, 40PFS5709/12, 40PFK5709/12, 40PFK6409/12, 40PFS6409/12, 40PFH6609/88, 40PFK6609/12, 40PFS6609/12, 40PFK6719/12, 40PFS6719/12, 40PUK6809/12, 40PUS6809/12, 40PUS6809/60, 40PFK6909/12, 40PFS6909/12, 40PFK6949/12, 40PFK6959/12, 40PFK6989/12, 42PFK6549/12, 42PFK6559/12, 42PFK6589/12, 42PFS7109/12, 42PFK7109/12, 42PFK7179/12, 42PFK7189/12, 42PFS7189/12, 42PFK7199/12, 42PFS7199/12, 42PFS7309/60, 42PFK7509/12, 42PFS7509/12, 47PFK6549/12, 47PFK6559/12, 47PFK6589/12, 47PFK7109/12, 47PFS7109/12, 47PFK7179/12, 47PFK7189/12, 47PFS7189/12, 47PFK7199/12, 47PFS7199/12, 47PFS7309/60, 47PFK7509/12, 47PFS7509/12, 48PFS5709/12, 48PFK5709/12, 48PFK6409/12, 48PFS6409/12, 48PFK6609/12, 48PFS6609/12, 48PFK6719/12, 48PFS6719/12, 48PFK6909/12, 48PFS6909/12, 48PFK6949/12, 48PFK6959/12, 48PFK6989/12, 50PUK6809/12, 50PUS6809/12, 50PUS6809/60, 55PFS5709/12, 55PFK5709/12, 55PFK6409/12, 55PFS6409/12, 55PFH6609/88, 55PFK6549/12, 55PFK6559/12, 55PFK6589/12, 55PFK6609/12, 55PFS6609/12, 55PFK6909/12, 55PFS6909/12, 55PFK6949/12, 55PFK6959/12, 55PFK6989/12, 55PFK7109/12, 55PFS7109/12, 55PFK7179/12, 55PFK7189/12, 55PFS7189/12, 55PFK7199/12, 55PFS7199/12, 55PFS7309/60, 55PFK7509/12, 55PFS7509/12, 58PUK6809/12, 58PUS6809/12, 58PUS6809/60, 65PFK5909/12, 65PFS5909/12, 65PFS6659/12, 65PFS7559/12.
The appearance of the MainBoard 715G6080-M0D-000-005K is shown in the figure below:715G6080-M0D-000-005K
The appearance of the power supply
Main features of the PHILIPS 42PFS7309 device:
Installed matrix (LED-panel) LC420EUF (PG) (F1).
The matrix control uses the Timing Controller (T-CON) 6870c-04828.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a PF7900S, PF7702D PWM controller. As the power elements of the LED driver, keys of the type SM1F03NSFPC are used.
The necessary supply voltages for all nodes of the PHILIPS 42PFS7309 television are generated by the 715G6385-P01-000-002E power supply module or its analogs using LCS700LG, LD7752B, LD7591T microchips and TK18A60V, TK13A65U power switches.
MainBoard - the main board (motherboard) is a module 715G6080-M0D-000-005K, using chips MT5591IVDJ, CAT24C128WI, K9F4G08U0D-SIB0, KLM4G1FE3B, STA381BWTR and others.
Tuner TDSY-G380D, SUT-ZE221ZN (CXD2839ER) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC420EUF-PGF1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 1%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 1400: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering), CIE1931 72%
Response Time: TBD
Frequency: 120Hz
Lamp Type: 6 strings WLED Without Driver
Signal Interface: LVDS (4 ch, 8/10-bit), 92 pins
Voltage: 12.0V
