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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Saturday 25 January 2020

REPAIR / SERVICING TV PHILIPS 32PF9531

Technical description and composition of the PHILIPS 32PF9531 TV, type of panel and applicable modules. The composition of the modules.
PHILIPS
Model: 32PF9531 / 10
Chassis / Version: FJ3.0E LA
Panel: LC320WX2 (SL) (01)
Power Supply (PSU): 3104_313_60924 3104 313 6092.4
MainBoard: 3104_313_60804 3104 313 6080.4
IC MainBoard: PACIFIC3-N3 (O), PNX3000HL / N3, PNX2015E / M1E02, T6TE0TBG-0001, PNX8550EH / M2 / S1, PACIFIC3-N3 (O), ISP1561BM
Tuner: UV1318S / A
Specifications 32PF9531
PHILIPS 32PF9531
General recommendations for repairing TV LCD
Any repair of electronic equipment usually begins with a careful external inspection of the device and troubleshooting. In this case, you should inspect all the elements of the PHILIPS 32PF9531 / 10 TV, both internal and external. Often, for certain external signs, it is possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Power Module Repair
If the 32PF9531 / 10 TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light up or blink - there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some PHILIPS models. 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.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
Inverter Repair
If the PHILIPS 32PF9531 / 10 TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
When repairing the inverter, it is often necessary for diagnostics to turn off the protection, 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.
It should be remembered that when the protection is turned off, there is always a risk of failure of the power elements of the inverter during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Once again, remind users! Attempts at self-repair of the PHILIPS 32PF9531 / 10 TV without the appropriate qualifications and experience can lead to its complete non-repairability!


Service manual and schematic diagram 32PF9531/10 Chassis FJ3.0E LA

 32PF9531/10, 32PF9631D/10, 32PF9731D/10, 37PF9731/69, 37PF9731D/10, 42PF9641D/10, 42PF9731D/10, 42PF9831/69, 42PF9831D/10

The appearance of MainBoard 3104_313_60804 is shown in the figure below:
3104_313_60804
3104_313_60804 can be used in TVs:
PHILIPS 32PF9531/10 (Panel LC320WX2 (SL) (01)), PHILIPS 32PF9731D/10 (Panel LC320WX2(SL)(01) code 022), PHILIPS 42PF9641D/10 (Panel LC420WU2 (SL)(A1)).
The appearance of the power supply
Main features of the PHILIPS 32PF9531 device:
Installed matrix (LCD panel) LC320WX2 (SL) (01).
The necessary supply voltages for all nodes of the PHILIPS 32PF9531 TV are generated by the power supply module 3104_313_60924, or its analogs.
MainBoard - the main board (motherboard) is a module 3104_313_60804, using the PACIFIC3-N3 (O), PNX3000HL / N3, PNX2015E / M1E02, T6TE0TBG-0001, PNX8550EH / M2 / S1, PACIFIC3-N361B, others.
The UV1318S / A tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WX2-SL01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 550 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/10 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: HCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V

Posted By: FRANK at 07:08
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