Technical description and composition of the PHILIPS 26PFL3207H TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 26PFL3207H / 12
Chassis / Version: TPM9.3E LA
Panel: TPT260B2-L03 Rev. C1C
LED driver (backlight): integrated into PSU
Power Supply (PSU): 715G5508-P03-000-002M
PWM Power: 54241 (8pin)
MOSFET Power: 10N65K3
MainBoard: 715G5155-M02-002-005K Ver.A
IC MainBoard: K4B1G1646G-BCH9, S1084-33, AZ1117D-AD
Tuner: ENV57U09D5F
Specifications 26PFL3207H
PHILIPS 26PFL3207H
General repair guidelines for TV LCD LED
Possible malfunctions
- The PHILIPS 26PFL3207H does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
In some of these cases, a fault is detected in the 715G5508-P03-000-002M power supply module. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (10N65K3) and rectifier diodes for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) 54241 (8pin), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. 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.
It should be remembered that it is not possible to determine the break in the LED lines without disassembling the panels using a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a failure, the zener diode PN junction will either be cut off or broken into short-circuit.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 715G5155-M02-002-005K 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). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its K4B1G1646G-BCH9, S1084-33, AZ1117D-AD chips and other possible malfunctioning components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If the TV works normally from external devices, but does not tune into television channels, the tuner ENV57U09D5F may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention TV owners! Attempts at self-repair of PHILIPS 26PFL3207H are not recommended by the manufacturer and can lead to serious negative consequences!
Service manual and schematic diagram 26PFL3207H Chassis TPM9.3E LA
PSU SCHEMATIC ----------------------> 715G5508 Power supply 715G5508-P01-001-002M
Appearance of MainBoard 715G5155-M02-002-005K is shown in the figure below:715G5155-M02-002-005K
715G5155-M02-002-005K_low
715G5155-M02-002-005K can be used in TVs:
PHILIPS 40PFL3107H/60 (Panel LTA400HM23 001 code 182), PHILIPS 40PFL3108T/60 (Panel LTA400HM23 001 SAMSUNG code 182 p/n: 996590004008), PHILIPS 40PFL4308T/60 (Panel LTA400HM23), PHILIPS 26PFL3207H/12 (Panel TPT260B2-L03 Rev. C1C).
Main features of the PHILIPS 26PFL3207H device:
Installed matrix (LED panel) TPT260B2-L03 Rev. C1C.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the PHILIPS 26PFL3207H TV are generated by the 715G5508-P03-000-002M power supply module or its analogs using 54241 (8pin) microcircuits and 10N65K3 type power switches.
MainBoard - the main board (motherboard) is a module 715G5155-M02-002-005K, using microcircuits K4B1G1646G-BCH9, S1084-33, AZ1117D-AD and others.
The ENV57U09D5F tuner provides TV reception and channel tuning.
