Technical description and composition of the PHILIPS 22PFL3405 TV, type of panel and applicable modules. The composition of the modules.PHILIPS LED
Model: 22PFL3405 / 12
Chassis / Version: TPN1.1E LA
Panel: 22 inch
LED driver (backlight): 715G3897-P01-W20-002U
Power Supply (PSU): 715G3897-P01-W20-002U
PWM Power: LD7576AGR (7pin)
MOSFET Power: STP10NK70ZFP, AO4443 (8)
MainBoard: 715G3891-M1A-000-004B
IC MainBoard: AD82581B
Tuner: TAFT-S712D
PHILIPS LED
Model: 22PFL3405 / 60
Chassis / Version: TPN1.1E LA
Panel: LED
LED driver (backlight): 715G3897-P1A-W20-002U
Power Supply (PSU): 715G3897-P1A-W20-002U
MainBoard: 715G3891-M1C-000-004X
Tuner: PHI-CBPFAN5RP2
Technical Specifications 22PFL3405
PHILIPS 22PFL3405
General repair guidelines for TV LCD LED
Repair of electronic equipment usually begins with its external inspection and diagnosis of the malfunction. In this case, you should examine all the internal components of the PHILIPS 22PFL3405 / 60 TV, as well as the external elements of the housing. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before the necessary measurements are taken. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a significant clue in the assumptions about the causes and consequences of the malfunction.
In the case when the 22PFL3405 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, the power supply module 715G3897-P1A-W20-002U is probably faulty in this case. If it is serviceable with such manifestations, it is necessary to check the stabilizer (converter) of the processor power supply on the motherboard. Diagnostics and repair of the general power supply unit should always begin by checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
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.
If there is no image when you turn on the PHILIPS 22PFL3405, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the LED panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the health of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software).
In cases where there is no tuning to the local television channels, you should make sure that there is varicap supply voltage (30-33V) and other supply voltages at the terminals of the PHI-CBPFAN5RP2 tuner.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
Service manual and schematic diagram 22PFL3405/60 Chassis TPN1.1E LA
MODELS: 19PFL3405, 22PFL3405, 26PFL3405
The appearance of the MainBoard 715G3891-M1C-000-004X is shown in the figure below:715G3891-M1C-000-004X
715G3891-M1C-000-004X can be used in TVs:
PHILIPS 22PFL3405/60 (Panel LED), PHILIPS 26PFL3405/60 (Panel LC260EXN (SC)(B1)).
The appearance of the power supply
Main features of the PHILIPS 22PFL3405 device:
Installed matrix (LED-panel) LED.
The LED driver 715G3897-P1A-W20-002U is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the PHILIPS 22PFL3405 TV is carried out by the power supply module 715G3897-P1A-W20-002U, or its analogues.
MainBoard - the main board (motherboard) is a module 715G3891-M1C-000-004X.
The PHI-CBPFAN5RP2 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: No Brand
Model: HK185LEDM-CH25H
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare (Haze 1%)
Brightness: 220 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 9 (G to G)
Frequency: 60Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
