Technical description and composition of the PHILIPS 19PFL3507T TV, panel type and applicable modules. The composition of the modules.PHILIPS LED
Model: 19PFL3507T / 60
Chassis / Version: TPM9.3E LA
Panel: LC185EXE (TE) (A1)
LED driver (backlight): 71G5309-P0A-W21-21-0020
PWM LED driver: PF7001 S
MOSFET LED driver: BA2G14 (4482)
Trans LED driver: 380GL 19P042YS 0TN (CIS 04 1218 HIPOT OK)
Power Supply (PSU): 715G5309-P0A-W21-0020
PWM Power: LD7750RGR
MOSFET Power: K6A65D
MainBoard: 715G5155-M01-002-005K
IC MainBoard: 22A6FJTg4 (TMDS361B), STA3818W, NT5CB64M16DP-CF, MT5135AE, MN88472,54319 (T1 191)
Tuner: ENV57U04D8F
Control: UM-4AA
Specifications 19PFL3507T
PHILIPS 19PFL3507T
General repair guidelines for TV LCD LED
It is advisable to start repairing the PHILIPS 19PFL3507T / 60 TV with a careful external examination of both internal and external elements. 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 absence of any signs of operability, when the PHILIPS 19PFL3507T does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power supply module 71G5309-POA-W21-21-0020. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) K6A65D is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the binding of the LD7705RDR PWM controller chip are subject to verification, which it is desirable to verify by replacement.
Sometimes the PHILIPS 19PFL3507T TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the converter for the panel backlight LEDs, or a break in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
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.
Diagnosis and repair of the motherboard 715G5155-MO1-002-005K (VER A) is carried out by checking the operability of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - 22A6FJTg4 (TMDS361B), STA3818W, NT5CB64M16DP-CF, MT5135AE, MN88472,54319 (T1 191) which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Before replacing the tuner ENV57U04D8F, if there is no tuning to the channels, you must first check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Attention! For users and owners of 19PFL3507T TVs who do not have the appropriate qualifications, knowledge and experience, we strongly recommend against attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
Service manual and schematic diagram 19PFL3507T/60 Chassis TPM9.3E LA
MODELS : 19PFL3507H, 19PFL3507T, 22PFL3507H, 22PFL3507T, 22PFL3517H, 22PFL3517T, 22PFL3557H, 24PFL3507H, 24PFL3507T
The appearance of the MainBoard 715G5155-M01-002-005K is shown in the figure below:715G5155-M01-002-005K
715G5155-M01-002-005K can be used in TVs:
PHILIPS 19PFL3507T/60 (Panel LC185EXE (TE) (A1)), PHILIPS 32PFL3517T/60 (Panel T320HVN01.5 code 163 p/n: 996590001218), PHILIPS 42PFL3507T/60 (Panel LC420EUE SE M2 p/n: 932228891682).
The appearance of the power supply
Main features of the PHILIPS 19PFL3507T device:
Installed matrix (LED-panel) LC185EXE (TE) (A1).
The LED driver 71G5309-P0A-W21-21-0020 is used to power the backlight LEDs, it is controlled by the PF7001 S PWM controller. The 380GL 19P042YS 0TN transformer (CIS 04 1218 HIPOT OK) is installed in the LED driver converter. As the power elements of the LED driver, keys of the type BA2G14 (4482) are used.
The necessary supply voltages for all nodes of the PHILIPS 19PFL3507T TV are generated by the 715G5309-P0A-W21-0020 power module or its analogs using LD7750RGR microcircuits and K6A65D type power switches.
MainBoard - the main board (motherboard) is a module 715G5155-M01-002-005K, using microchips 22A6FJTg4 (TMDS361B), STA3818W, NT5CB64M16DP-CF, MT5135AE, MN88472,54319 (T1 191) and others.
The ENV57U04D8F tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC185EXE-TEA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 18.5 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 409.8x230.4 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.1 / 3.9 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 strings WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
