REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Monday, 10 February 2020

REPAIR / SERVICING TV PHILIPS 20PFL4102S

Technical description and composition of the PHILIPS 20PFL4102S TV, panel type and applicable modules. The composition of the modules.
PHILIPS
Model: 20PFL4102S / 60
Chassis / Version: LC4.1E AB
Panel: LC201V02 (SD) (D1)
Inverter (backlight): LIPS TCI-D2S F P2005234 2010BL07417001857 BL6L60P3 B
PWM Inverter: UBA2070T (16n) Sq. BIT3193G (16)
MOSFET Inverter: 40P03GI, 40T03GP
Power Supply (PSU): DAC-12M019 AOF 3139 128 77611 LIPS
PWM Power: TEA1533AP, L6562D (PFC), TEA1532
MOSFET Power: P4NK80, P10NK60, BSP100, D5NM3 (chip), SRA1030 (diode) // 40T03GP, 40P03GI.
MainBoard: 3139_123_60192 3139 123 60192 Wk534.3
IC MainBoard: CPU: TDA15021H1 / N1C91; Scaler: GM5221H-LF
Tuner: UR1316S / A
Control: rc1683803 / 01h aw 3139 238 11772
PHILIPS
Model: 20PFL4102S / 60
Chassis / Version: LC4.1E AB
Panel: LC201V02 (CD) (B1)
Inverter (backlight): integrated into PSU
PWM Inverter: UBA2070T
Power Supply (PSU): P2005234 3341 000 10074 BL6L60P3LPL
PWM Power: TEA1533AT, UBA2070T, L6562D (PFC)
MOSFET Power: P10NK60ZFP, P4NK80ZFP
MainBoard: 3139_123_60192 3139 123 60192 Wk534.3
IC MainBoard: CPU: TDA15021H1 / N1C91; Scaler: GM5221H-LF
Tuner: UV1318S / A I H-3
Specifications 20PFL4102
PHILIPS 20PFL4102S
General recommendations for repairing TV LCD
Repair of the PHILIPS 20PFL4102S / 60 TV is advisable to start with a careful external examination. In this case, both external and internal components of the device should be inspected. Specific external damage to the elements can sometimes prompt further actions to determine the malfunction of the TV and localize the defect before the necessary measurements and waveforms are taken. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
Sometimes the PHILIPS 20PFL4102S / 60 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the TCI-D2S F common power module P2005234 3341 000 10074 BL6L60P3LPL. 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 switch P10NK60ZFP P4NK80ZFP is detected, which can be integrated with the 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 remembered that the N-FET keys used in flyback converters rarely fail without their own sake without any reasons that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. Chip PWM controller TEA1533AT. UBA2070T L6562D can also cause a breakdown of the power switch of the converter.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If the PHILIPS 20PFL4102S / 60 TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR.
When repairing the inverter DAC-12M019 ADF REV05 3139 128 77613, it is often necessary to disable the protection for diagnostics, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
Attention! For users and owners of 20PFL4102S / 60 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-repairability of the device.


Service manual and schematic diagram 20PFL4102S/60 Chassis LC4.1E AB


MODELS: 15PF4110, 15PF5120, 17PF4310, 20PF4110, 20PF4310, 20PF5120, 20PF5320, 23PF5320


 The appearance of MainBoard 3139_123_60192 is shown in the figure below:
3139_123_60192
3139_123_60192 can be used in TVs:
PHILIPS 20PF4110S/58 (Panel LC201V02 (SD)(B1)), PHILIPS 15PF4121/58 (Panel LC150X02 (TL)(01)), PHILIPS 15PF5120/58 (Panel LC150X02), PHILIPS 15PF5121/58 (Panel IDM69E1S51718 Rev:01 QD15XL16 ), PHILIPS 15PF5121/58 (Panel T150XG01 V.3), PHILIPS 20HF5474/10 (Panel LC201V02 (SD)(D1)), PHILIPS 20PF4121/58 (Panel LC201V02 (SD)(B1)), PHILIPS 20PF5120/58 (Panel A201SN02 V4), PHILIPS 20PF5320/58 (Panel LC200WX1 (SL)(01)), PHILIPS 20PFL4101S/60 (Panel LC201V02 SD B1), PHILIPS 20PFL4102S/60 (Panel LC201V02 (SD)(D1)), PHILIPS 20PFL4102S/60 (Panel LC201V02 (CD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 (SD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 SD D1), PHILIPS 20PFL4122/58 (Panel A201SN02 V.5), PHILIPS 20PFL5122/58 (Panel A201SN02 V.5), PHILIPS 23PFL5322/58 (Panel T230XW01 V.3), PHILIPS 23PF4321/58 (Panel T230XW01 V.2).
PSU Advanced
The P2005234 power module is made using a Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC assembly is a Step-Up Converter based on the L6562D PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of an increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 20PFL4102S device:
Installed matrix (LCD panel) LC201V02 (CD) (B1).
To power the backlight, a converter is used, combined with a power supply, controlled by a UBA2070T PWM controller.
The necessary supply voltages for all nodes of the PHILIPS 20PFL4102S TV are generated by the P2005234 power module or its analogs using TEA1533AT, UBA2070T, L6562D (PFC) microcircuits and power switches of the type P10NK60ZFP, P4NK80ZFP.
MainBoard - the main board (motherboard) is a module 3139_123_60192, using CPU chips: TDA15021H1 / N1C91; Scaler: GM5221H-LF and others.
The UV1318S / A I H-3 tuner allows you to receive television programs and tune to channels.
Posted By: FRANK at 05:53
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