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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Tuesday, 11 February 2020

REPAIR / SERVICING TV PHILIPS 26PF9531

Technical description and composition of the PHILIPS 26PF9531 TV, type of panel and applicable modules. The composition of the modules.
PHILIPS
Model: 26PF9531 / 10
Chassis / Version: BJ3.0E LA
Panel: LC260WX2 SL B2
Inverter (backlight): 6632L-0223F 0224F
Power Supply (PSU): 3104_313_61463
PWM Power: TEA1533AT (2pcs)
MOSFET Power: STP6NK60
MainBoard: 3104_313_60735
IC MainBoard: K4D551638H-LC50, PNX3000HL, ISP1561BM, K96561
Tuner: UV1318S / A I H-3
PHILIPS
Model: 26PF9531 / 10
Chassis / Version: BJ3.0E LA
Panel: LC260WX2-SLB2 (SLA1)
T-CON: 6870C-0062A LC260WX2-SLA1 TPS6516D
Power Supply (PSU): 3104_313_61463
MainBoard: 3104_313_60735
IC MainBoard: K4D551638H-LC50, PNX3000HL, ISP1561BM, K96561
Tuner: UV1318S / A I H-3
Specifications 26PF9531
PHILIPS 26PF9531
General recommendations for repairing TV LCD
It is recommended that you start the troubleshooting of the PHILIPS 26PF9531 / 10 TV, as well as all other electronic devices, with an external inspection of both external and internal elements and modules. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of the element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
Power Module Repair
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain probability that the power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain PHILIPS models and happens much less often. In the absence of swollen filter capacitors of the secondary rectifiers, the diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought 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.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
Inverter Repair
In cases where the PHILIPS 26PF9531 / 10 TV has lost an image, and the sound is there and all other functions are functional, there is a possibility of a malfunction of the inverter (converter for powering the backlight). When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
Diagnostics and repair of the inverter are often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After the diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Repair Main Board
On the BJ A STEP EU 4349 motherboard, in case of a malfunction, you should first check the operation of all the stabilizers or power converters of the microcircuits and, if necessary, update the software (software).
Attention! For users and owners of 26PF9531 / 10 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 26PF9531/10 Chassis BJ3.0E LA



MODELS: 26PF9531/10, 26PF9631D/10, 32PF9541/10, 32PF9551/10, 32PF9631D/79, 32PF9641D/10, 32PF9968/10, 37PF7641D/10, 37PF9631D/10, 37PF9631D/79, 37PF9641D/10




 The appearance of MainBoard 3104_313_60735 is shown in the figure below:
3104_313_60735
3104_313_60735 can be used in TVs:
PHILIPS 26PF9531/10 (Panel LC260WX2 SL B2), PHILIPS 26PF9531/10 (Panel LC260WX2-SLB2 (SLA1)), PHILIPS 32PF9541/10 (Panel LC320W01-SL06 code 046), PHILIPS 32PFL7332/10 (Panel V315B1-L05 Rev.C1), PHILIPS 32PFL7572D/12 (Panel LC320W01-SLB1 116), PHILIPS 32PFL7582D/10 (Panel LC320W01 (SL)(06) code 046), PHILIPS 37PFL7562D/10 (Panel T370XW02 V05), PHILIPS 37PFL7332/10 (Panel LC370WX1 (SL)(B1)).
The appearance of the power supply
Main features of the PHILIPS 26PF9531 device:
Installed matrix (LCD-panel) LC260WX2-SLB2 (SLA1).
The matrix control uses the Timing Controller (T-CON) 6870C-0062A.
The formation of the necessary supply voltages for all nodes of the PHILIPS 26PF9531 TV is carried out by the power module 3104_313_61463, or its analogs.
MainBoard - the main board (motherboard) is a module 3104_313_60735, using chips K4D551638H-LC50, PNX3000HL, ISP1561BM, K96561 and others.
The UV1318S / A I H-3 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC260WX2-SLB2
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 700: 1
Display Colors: 16.7M (8-bit)
Response Time: 9/9 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 17 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Posted By: FRANK at 06:09
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