Question about Philips 42PF9630A 42 in. Plasma Television

2 Answers

Static while on, logic board led flashing, normal startup no pic

Picture went out a few days ago and now it still turns on fine with no error lights. there is just some sparse colored snow on the screen like random pixels firing. LED2011 is blinking on the logic board. All other LED's are steadily lit. Suggestions?

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  • Seth Alison
    Seth Alison Jun 05, 2010

    I got the TV for free. It was the previous owner who said that the picture recently went out on it. I have not hooked it up to a video source. Nothing really happens on the screen, but when you push the menu button, there are flickering specs of rgb randomly across the screen. More than before you hit the menu button. what board would cause the problem? I am mostly wondering if the flashing green LED on the main logic board is normal or points to the problem.

    thanks!

  • Seth Alison
    Seth Alison Jun 05, 2010

    Thank you very much for the very informative answer! Take care!

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2 Answers

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  • Philips Master
  • 12,061 Answers

Http://www.retrevo.com/support/Philips-42PF9630A/37-TVs-manual/id/278bh337/t/2/

Above is your user manual, below that is a pay for link for your service manual. https://www.completeservicemanuals.com/philips/magnavox/plasma-television/cat_89.html Below is a link for a FREE services manual http://www.scribd.com/doc/21281939/PHILIPS-BJ2-4UPA-BJ2-5UPA Below, is a thread, discussing this tv and some issues, perhaps this will be of assistance. I have included these manuals so you can get to grips with it all, anbd if you intend to try to repair yourself, not really recommended, then at least you have the most important tool, the service and repair manual. You see, with just this symptom, it is nearly impossible to tell what the exact "Cause" of this symptom is. The LED's do not tell us what, exactly what is wrong, sometimes it may indicate the "Area", just say in your case, it indicates the X board. BUT thats NOT where the "Fault is" thats just the part that is affected. We MUST find the damage, and repair, and, also the cause of the damage, usually never one in the same. These days unlike the "Old" analogue days it just isn't realistically possible to fix anything but the most basic of problems with todays sophisticated units. This is quite apart from the Safety aspect, any unit that can cause a firs or have an explosion, or both, is NOT to be treated lightly, and and the repairer, of the unit is legally responsible, another thing to think about. Also, one must have tools, a Multimeter, a soldering iron, a deslodering iron, an oscilloscope, a signal tracer, tools, and most important of all, a Service Manual, without which, there is no way to even begin to understand and fix it, and more importantly Program it, AFTER it has been fixed. As these days a TV, is a PC, a Tuner, and an HDTV Monitor, and more, all in one. in the "old" days TV"s were more, rudimentary, and built to last for 20 years, and a "Parts" supply was set aside. They usually used to fail for only a few reasons, and they while still difficult, were less difficult to repair. Electrical knowledge was transferable, and they could be and would respond to, This-is-the-symptom-This-us-the-Fix, But that no longer applies, as now, it can be a Fault on I squared Bus, or "Sensor" failure, or it simple may have "Crashed" just like a PC, It could be a Diode go bad, and that will stop the whole thing. You see, in the day, the sets were Very "Fault Tolerant" because they were Analouge, and a faulty, component, or more sometimes, the set would always diplay something usually, and when they didn't it was one of only a few things, sure there are always the horrid ones, and there are pleanty of those, but all in all it was quite easy. But with Digital Electronics, it either goes, or it doesnt, there are usualy few half measures. I mean thats the definition of logic either going or not. So it can take very little to completely paralyse a set, and generally give the only sysmptom, it can, by not working, usually No picture, or the like. So you, see the list is endless almost for any given SYMPTOM, as that is what is being seen, not the cause, as I keep going on about. Also any fault, usually involves the Power Supply, it is either the cause, the cause of the damage, or it is damaged. or ALL of them. Then after you have done the electronic repairs, you then must program the set to work, and align, and set up in general, any one of those settings missed or done wrong, back to square one.
So, it is nearly always my professional opinion that one should always get a "Quote" form the manufacturers recommended service center, Philips ion your case, please contact a local or head office, and ask for a referral to an Authorised Service Center. Now, I cannot stress how important that last point is. It is even worth the cost of shipping. you see an authorised service agent, they will have trained staff, trained on their (Your) brand, also they have first hand access to parts, original parts, too. . This will actually save you money and ensure you can actually get it back fixed. Of course asking for a "Quote" also gives on the option of repair or replace. Often my clients,do not go through with repair, unless it is moderate, but in some of the more costly jobs they see it, as do i, that a replacement, with a warranty, is a better option. As an aside here, one could then tear the TV down, and sell the Known Good bits. You'd be surprised who needs parts, i myself often must by from third party sources to effect a repair. So money could be recouped, somewhat,and help out someone else.
Below is a forum that you may find helpful.

http://www.avforums.com/forums/plasma-tvs/400763-philips-plasma-repair-advice-thread-13.html

Posted on Jun 05, 2010

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  • Master
  • 10,865 Answers

Hello. You most likely have a loose or bad solder joint. Take your set into a repair shop for the least expensive fix. J.

Posted on Jun 05, 2010

  • Seth Alison
    Seth Alison Jun 05, 2010

    Thanks for the response. I want to avoid the repair shop and fix it myself. What board would be at fault that I could look at more closely? I am great at repairing and soldering, but this is my first Plasma project. What is the significance of the flashing green LED on the logic board? How do you test to see if one of the other boards simply need replacing (buffers, signal, X/Y/Z sustain, etc...)


    thanks!



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