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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Wednesday, 22 January 2020

REPAIR / SERVICING TV PHILIPS 42PFL6007T

Technical description and composition of the PHILIPS 42PFL6007T TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 42PFL6007T / 60
Chassis / Version: QFU2.1E LA
Panel: LC420EUF (FE) (P1)
LED backlight: 6922L-0030A, 6920L-0001C, 6916L0892A, 6916L0893A
T-CON: 6870C-0402C
LED driver (backlight): integrated into PSU
PWM LED driver: DDA009 (24pin)
Power Supply (PSU): DPS-119CP
PWM Power: DDA010 (Standby), SCY99102BDR2G (PFC), L6599 (PWM Resonant), FSL106MR
MainBoard: 310431365664 - 3104 313 65664 - 310432868322 - 310432868321
IC MainBoard: FUSION120, H5TQ2G83BFR, H26M21001ECR, TAS5731P1
Tuner: SUT-RE214AN
Control: IR: GWA7.820.751-1 (HT), WiFi: 282206502587 1311R1C532191 D0AEEC112EE1
Specifications 42PFL6007T
PHILIPS 42PFL6007T
General repair guidelines for TV LCD LED
Possible manifestations of defects
- The PHILIPS 42PFL6007T TV does not turn on, does not respond to the remote control and the control panel buttons, the indicators do not light or flash.
Often with such manifestations, the main power module DPS-119CP is found to be faulty. In this case, it is necessary to measure the secondary output supply voltage, and in case of their absence, check the operability of the power switches of the converters - standby mode, main source and PFC, as well as rectifier diodes for the probability of breakdown of PN junctions.
During thermal and avalanche breakdowns of semiconductors in secondary circuits, the converter can usually work normally in emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and less often the current sensor at the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power keys can be PWM (PWM) DDA010 (Standby), SCY99102BDR2G (PFC), L6599 (PWM Resonant), FSL106MR. PWM controllers are usually checked by replacement.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
As a rule, in such cases there is no display backlight. The reason can be both in the power of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. 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.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 310431365664 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing elements FUSION120, H5TQ2G83BFR, H26M21001ECR, TAS5731P1 requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
If the TV works normally with external devices, but does not tune into television channels, the tuner SUT-RE214AN may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention! For users and owners of 42PFL6007T 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.


SCHEMATIC MANUAL ----------------> Service manual and schematic diagram 55PFL6007T/12 Chassis QFU2.1E LA

Chassis QFU2.1E LA used in the following models:

32PFL6007H/12, 32PFL6007K/12, 32PFL6007T/12, 32PFL6087H/12, 32PFL6087K/12, 32PFL6087T/12
37PFL6007H/60, 37PFL6007H/12, 37PFL6007K/12, 37PFL6007T/12, 37PFL6777H/12, 37PFL6777K/12
42PDL6907H/12, 42PDL6907K/12, 42PDL6907T/12, 42PFL6007H/12/60, 42PFL6007K/12, 42PFL6007T/12/60, 42PFL6057H/12/60, 42PFL6057K/12, 42PFL6057T/12/60, 42PFL6067H/12/60, 42PFL6067K/12, 42PFL6067T/12/60, 42PFL6097H/12/60, 42PFL6097K/12, 42PFL6097T/12/60, 42PFL6687H/12/60, 42PFL6687K/12, 42PFL6687T/60, 42PFL6877H/12/60, 42PFL6877K/12, 42PFL6877T/12/60
47PDL6907H/12, 47PDL6907K/12, 47PDL6907T/12, 47PFL6007H/12/60, 47PFL6007K/12, 47PFL6007T/12/60, 47PFL6057H/12/60, 47PFL6057K/12, 47PFL6057T/12/60, 47PFL6067H/12/60, 47PFL6067K/12, 47PFL6067T/12/60, 47PFL6097H/12/60, 47PFL6097K/12, 47PFL6097T/12/60, 47PFL6687H/12/60, 47PFL6687K/12, 47PFL6687T/60, 47PFL6877H/12/60, 47PFL6877K/12, 47PFL6877T/12/60
55PFL6007H/12, 55PFL6007K/12, 55PFL6007T/12, 55PFL6097H/12, 55PFL6097K/12, 55PFL6097T/12 
 

 The appearance of MainBoard 310431365664 is shown in the figure below:
310431365664
310431365664 can be used in TVs:
PHILIPS 32PFL6007T/12 (Panel LC320EUF FEP1 code 423), PHILIPS 32PFL6008T/60 (Panel LC320EUF (FE)(P1) code 423), PHILIPS 32PFL6087T/12 (Panel LC320EUF (FE)(P1)), PHILIPS 32PFL6087T/12 (Panel LC320EUF FE P1), PHILIPS 42PFL6007T/60 (Panel LC420EUF (FE)(P1)), PHILIPS 42PFL6057T/60 (Panel LC420EUF FC P1), PHILIPS 42PFL6097T/60 (Panel LC420EUF (FE)(P1) code 322 p/n: 932228895682), PHILIPS 42PFL6877T/60 (Panel LC420EUF (FE)(P1)), PHILIPS 47PFL6057T/60 (Panel LC470EUF FE P1 (LG/PH) B code 323 p/n: 932228896682), PHILIPS 47PFL6097T/60 (Panel LC470EUF (FE)(P1)), PHILIPS 47PFL6877T/60 (Panel LC470EUF FE P1), PHILIPS 55PFL6007T/12 (Panel C550EUF (FE)(P1)), PHILIPS 60PFL9607T/12 (Panel LK600D3LB63 (SRJ)), PHILIPS 42PFL6067T/12 (Panel LC420EUF (FE)(P1)), PHILIPS 47PFL6007K/12 (Panel LC470EUF (FE)(P1)).

The appearance of the power supply
Main features of the PHILIPS 42PFL6007T device:
Installed matrix (LED-panel) LC420EUF (FE) (P1).
The matrix control uses the Timing Controller (T-CON) 6870C-0402C.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by a DDA009 PWM controller (24pin).
The necessary supply voltages for all nodes of the PHILIPS 42PFL6007T TV are generated by the DPS-119CP power module or its analogs using DDA010 (Standby), SCY99102BDR2G (PFC), L6599 (PWM Resonant), FSL106MR microcircuits.
MainBoard - the main board (motherboard) is a module 310431365664, using chips FUSION120, H5TQ2G83BFR, H26M21001ECR, TAS5731P1 and others.
The SUT-RE214AN tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC420EUF-FEP1
Type: a-Si TFT-LCD, Panel
Diagonal size: 42 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 930.24x523.26 mm
Surface: Antiglare (Haze 1%), Hard coating (2H)
Brightness: 400 cd / m²
Contrast Ratio: 1600: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering), CIE1931 72%
Response Time: 5 (G to G); 8 (MPRT)
Frequency: 120Hz
Lamp Type: WLED Without Driver
Signal Interface: LVDS (4 ch, 8/10-bit), 92 pins
Voltage: 12.0V