Saturday 1 February 2020

REPAIR / SERVICING TV PHILIPS 42PFL9803H

Technical description and composition of the PHILIPS 42PFL9803H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 42PFL9803H / 10
Chassis / Version: Q529.1E LB
Panel: T420HW02 V.1 code 149 p / n: 932226404682
T-CON: T-CON + LED DIM 42T04-C0B
LED driver (backlight): 42T04-D08, 42T04-D09 T420HW02 V1 M
Power Supply (PSU): PSC10243C M 3H230H SanKan 2722117100687
PWM Power: SSG9100 (16), KIA393P (8), A6159 (Standby)
MOSFET Power: K3683, K3502,
MainBoard: 3104.303.51026 - 3104.313.62146 285853350270
IC MainBoard: PNX8541E / 2414, ST17L0LBWC, ISP1564HL, AD8197A
Tuner: TD1716F / BHXP-3
Specifications 42PFL9803H
PHILIPS 42PFL9803H
General repair guidelines for TV LCD LED
If the 42PFL9803H does not turn on, does not respond to the remote control and the front panel buttons, does not blink light bulbs and does not show any signs of operability, the power supply module PSC10243C M 3H230H SanKan 2722117100687 is probably faulty in this case. If there are no swollen filter capacitors in the secondary rectifiers, the unit diagnostics power supply should start by checking the fuse and, if it breaks, you must first check all the power semiconductor elements of the primary circuit - diodes and transistors K3683, K3502, for the likelihood of an avalanche or t pilaf breakdown.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
If the PHILIPS 42PFL9803H does not have an image, but there is sound, the backlight LEDs of the T420HW02 V.1 932226404682 code 149 panel or their power converter may be malfunctioning - the LED driver.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the lines and connectors.
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. By opening the panel, each LED can be checked separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect probes in the forward direction to it. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of health. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
Repair of the motherboard 3104.303.51026 - 3104.313.62146 285853350270 should begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
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 - PNX8541E / 2414, ST17L0LBWC, ISP1564HL, AD8197A and replace 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.
If a TD1716F / BHXP-3 tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary supply voltage levels and data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
Attention to the owners! Attempts at self-repair of the PHILIPS 42PFL9803H TV are not recommended by the manufacturer and can lead to serious negative consequences!


Service manual and schematic diagram 42PFL9803H/10 Chassis Q529.1E LB

 37PFL9903H/10, 42PFL9803H/10, 42PFL9903/10H

 The appearance of MainBoard 3104.303.51026 is shown in the figure below:
3104.303.51026
3104.303.51026 can be used in TVs:
PHILIPS 32PFL7623D/10 (Panel LC320WXN-SAB1 code 136), PHILIPS 32PFL9603D/10 (Panel LK315D3LZ43), PHILIPS 32PFL9613 (Panel 32 ), PHILIPS 37PFL9603D/10 (Panel LC370WUF-SAB1 p/n: 932226169682), PHILIPS 37PFL9603D/10 (Panel LC370WUF SAB1 (LGPH) code 141), PHILIPS 42PFL7403S/60 (Panel p/n: 932225845000), PHILIPS 42PFL7623D/10 (Panel LC420WUE - SAA1), PHILIPS 42PFL9703D/10 (Panel LC420WUF-SAC1), PHILIPS 42PFL9703D/10 (Panel LC420WUF-SAC1 code 143), PHILIPS 42PFL9803H/10 (Panel T420HW02 V.1 code 149 p/n: 932226404682 ).
The appearance of the power supply
Main features of the PHILIPS 42PFL9803H device:
Installed matrix (LED panel) T420HW02 V.1 code 149 p / n: 932226404682.
The matrix control uses the Timing Controller (T-CON) T-CON.
The LED driver 42T04-D08 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the PHILIPS 42PFL9803H TV are generated by the PSC10243C power supply module or its analogs using SSG9100 (16), KIA393P (8), A6159 (Standby) microcircuits and power switches of the type K3683, K3502,.
MainBoard - the main board (motherboard) is a module 3104.303.51026, using chips PNX8541E / 2414, ST17L0LBWC, ISP1564HL, AD8197A and others.
The tuner TD1716F / BHXP-3 provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T420HW02 V1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 490 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 1.07B (10-bit), CIE1931 85%
Response Time: 15/5 (Tr / Td); 4 (G to G)
Frequency: 120Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V