PHILIPS 32PFH5500 TV description and composition, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 32PFH5500 /
Chassis / Version: QM15.2E LA
Panel: TPT315B5-EUJFFE
LED driver (backlight): integrated into PSU
PWM LED driver: PF7708AS
MOSFET LED driver: CYS9240
Power Supply (PSU): 715G6934-P01-002-002H
PWM Power: PF6003AHS, AOZ3015AI
MOSFET Power: TK8A65D
MainBoard: 715G7030-M0G-000-005N (WK: 1504)
IC MainBoard: MT5593FPIJ, THGBMBG6D1KBAIL, K4B4G1646D-BCMA
Tuner: TDSY-G480D Si2166-B22-GM
Specifications 32PFH5500
PHILIPS 32PFH5500
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 32PFH5500 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
In such cases, the malfunction should be sought first in the 715G6934-P01-002-002H power supply module. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches (TK8A65D) and rectifier diodes of converters for possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode, or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PFM-PF6003AHS, AOZ3015AI controllers, in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
In some of these cases, the malfunction is caused by a lack of backlighting on the display. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, sometimes you can detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 715G7030-M0G-000-005N motherboard should be started by checking the stabilizers and power converters needed to power the microcircuits and matrix. If necessary, update or replace the software (software). Board repair and chip replacement MT5593FPIJ, THGBMBG6D1KBAIL, K4B4G1646D-BCMA are carried out with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
If there is no reception of television channels, but the TV works properly from external devices, first of all you need to check the voltage of the TDSY-G480D Si2166-B22-GM tuner and update the software. The pulses from the I2C bus must be controlled with an oscilloscope.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Service manual and schematic diagram --------------------> PHILIPS 32PFH5500 Chassis QM15.2E LA.
The appearance of MainBoard 715G7030-M0G-000-005N is shown in the figure below:715G7030-M0G-000-005N
The appearance of the power supply
Main features of the PHILIPS 32PFH5500 device:
Installed matrix (LED-panel) TPT315B5-EUJFFE.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the PF7708AS PWM controller. As power elements of the LED driver, keys of the type CYS9240 are used.
The necessary supply voltages for all nodes of the PHILIPS 32PFH5500 TV are generated by the 715G6934-P01-002-002H power module or its analogs using PF6003AHS, AOZ3015AI microcircuits and TK8A65D type power switches.
MainBoard - the main board (motherboard) is a module 715G7030-M0G-000-005N, using chips MT5593FPIJ, THGBMBG6D1KBAIL, K4B4G1646D-BCMA and others.
The TDSY-G480D Si2166-B22-GM tuner provides TV reception and channel tuning.
