Question about Philips Magnavox 42MF521D/37 Television

4 Answers

I have a 50" philips plasma , shuts off and blinks red light 2 and 7 times Y main board module problem?

My phillips is just outside of 1 year warranty. After watching it for any random period of time it will shut itself off and them turn itself back on, after doing this a few times it will eventually stay off and blink one long red blink and one fast red blink. When you press the power button, the green light will light up, but will not turn on.. it immediately goes right to blinking red again. aftre unplugging and plugging it back in any random amounts of times it will come on. sometimes after a few unplugs, sometimes after 100 of them , I allways leave it unplugged till the capacitors discharge... or the lights no longer blink. On two occasions the red light blinked 7 times and then then i power cycled it and it didnt come back. i originally thought it was overheating but even after leaving it unplugged for 2 days it still did it.
I also have a distinctive rectangle or block in the upper left hand corner of the screen that has a sparkly picture. And sometimes any black on the screen has red sparkles in it, ie ; a guy is wearing a black coat on a movie.. its a red tinted black.. both of these problems come and go.
I had a TV repair company coem and replace the power supply , and he said he didnt see any other problems as i couldnt get the tv to do its shutting off thing while he was here. Aftre speaking with another TV repair guy on the phone he said it sounded like a Bad Y module? and wanted a $75 dollar diagnosis charge, $200 for the Y module and $279 for labor. Sounds a little high. I have the Tv opened on my work bench, And after reading a similar post it sounds like its the Y module, can anyone confirm this or have error codes for this TV? I contacted PTS electronics and they said theyd rebuild the board for around $100 bucks. Can anyone give me trouble shooting advice to correctly identify the exact part to send them?
I was watching my Magnavox 42" Plasma and the tv picture went black off and on a couple of times, when i turned off the tv with the remote and then turned it back on i heard a loud a POP, and then there was no picture just a few red specs of dots on the screen. After removing the cover i have noticed a brown out on the board labeled Samsung lj92-01200a. After some research i have noticed this the Y main board for the unit. Should i try replacing this unit? Or do you think it could possibly be allot of other problems? The tv worked great until the day of the pop with the tv screen blacking out. Please let me know if anyone has come across this problem?

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  • webbcr Dec 29, 2008

    same red light and turning itself off!!! any solutions. this sucks we have had ours 13 months!

  • Anonymous Jan 02, 2009

    any assistance would be great!

  • Robert McDonald Jan 16, 2009

    when we turn off the tv, it starts blinking red light by the green power lcd indicator. The only way to get it to come on again is to unplug the tv and plug back in and then after 2 or 3 tries, the tv will come back on. I can't find my manual for any troubleshooting help so if their is anyone who has had this same problem and got it fixed, please help. TV is only 9 months old but was bought from a display rack w/o a full warranty. Model number is 50MF231D/37

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It is your Y sus board. Most of the time one of the buffers goes bad and takes out the Y sus. If you do the repair.YOU NEED TO REPLACE BOTH BUFFER BOARDS also. If your buffers are bad,they will dammage your new board.If you have a multimeter you can check if the buffers are shorted.Check the upper buffer by placeing one lead to the first pin of the black connector and the other lead on the third pin.You should have 500 or more ohms resistance.If none,reverse the leads. If your reading is less than 200 ohms like about 70-120 ohms even reversing the test leads. Your board is bad. Testing the lover buffer is about the same,Just test the last pin,and the third to the last pin. same results apply. If you install your new Ysus with a buffer that is bad,it will short out the diode "D5018" on the Y sus.Near the upper black connector,or even short out the main IC.You can also have your board rebuilt, There is a company on Ebay. I have used them once. Worked great. And fast as hell..o delivery. Hope this helps.

Todd

Posted on Jul 05, 2010

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Take a look at http://www.consumeraffairs.com/home_electronics/philips.html. There are hundreds of Philips Plasma TV's with this same problem. I think Philips should be responsible to either fix or replace these units as the boards, even the replacements, are defective designs. Lets get together and file a class action lawsuite.

Posted on May 23, 2010

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The first repairman was a dunce. This is a VERY common problem with philips, samsung, magnavox and a few others that use that same board. The Y main is out. The buffers that are attatched to it are likely out too. Best (and cheapest) thing I have found is to send them all in for rebuild. I use a guy named Tri Nyguen in CA. Found him on ebay. I think his seller name is superdog84 or itritek. He does a great job and has FAST turn around. I've three of these TV's now all with the same ysus and buffer damage. Its a good thing they don't build them like this anymore...
Good luck.

Posted on May 16, 2009

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This web site has a philips service manual that might help. I have to say, you have to be somewhat technically inclind to understand it. http://www.scribd.com/doc/6528782/Philips-42pf7320

Posted on Apr 23, 2009

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SOURCE: I have a 50" philips plasma , shuts off and blinks red light 2 and 7 times Y main board module problem?

LOL! OMG! I have solved this problem for now. This is what worked for me. First off relax and don't think you need expensive technicians, and from blogs I read it's obvious that Phillips thinks they got their money so your waranty has expried and to bad for you, they don't care.

My problem and the run down. Bought a 50 inch plasma Phillips TV from BJ's Wholesale back in 2006 for about $1,700.00. Note I went o BJ's website to check out the Tv's as I have experienced problems and it looks to me the entire brand of Phillips is not even being sold their anymore. Ha, go figure.

Just this year early 2009, after having about three years I would watch HD cable and at times a click noise would occur where it even clicked the stereo amplifier where my surround sound audio would click as well with the tv, it would appear to go in silence, picture would go balc for about 10 seconds and go back on. This means from what I see later is that your blinking red lightb issue will be coming shortly in the future. It to me is a warning that if you are at that stage, expect to become a victim of the red light district. If this is the stage you are in, and it will still turn on and off ok, and your under warranty, make the complaint immediatly.

Then just 5 days ago, I tried to turn television on and it clicked as if it was going on and screen didn't show anything, and I got a 4 rapid flashing red lights a pause in flashing then 4 flashing red lights.

I googled these very blogs, check them all out as their are different ones and I have a 50 inch and even though the blog I took as a reference was one who had a Phillips at 42 inches etc, or different sizes it may not matter, look at flashing red light problems with all HD plasmas that are Phillips.

I have to give credit to a blogger by the screen name of Doug Mohr. Let me eloborate what his idea was and what I experienced to solve the issue.

It appears to me before all thse techs or electrical guys and TV repair men say they will fix your tv for the price in which you pretty much paid for it, STOP! Wait a minute. What if I told you you may be able to fix it for about $5.00 or $10.00. It reminds me of car mechanics that when my Mercedes shaked in idle position the dealers would be like hey you need to get a new timing belt, or a sensor, etc when all you really need is new spark plugs. Well isn't spark plugs cheaper? Yes indeed and it works fine.

Well, credit to Doug Mohr I went to my garage and looked for an older PC connection to an old computer of mine that was replaced with a new one. Apparently the same sort of connection to power up your computer is the same as the plug to your television. As soon as I saw that on a blog I went to replace the power cord.

The power cord to my old computer Dell from like 2003, looked as if the three little holes that plug into TV were smaller then the actual Phillips connection to TV, but only a little. I realized that it fir into the TV in back perfectly. I then pluged it in and damn it, it still had flashing red lights again. When it did it it again communicated to my receiver for audio surround sound which my barnd is Sony and it shut down including the volume was on only 10 seconds with no picture. So I turned off the receiver for audio, and unplugged with old PC Connecter to TV, waited another 15 seconds, and sure enough I plugged in as if I let it fail once however I may have done what is known as cycling my TV and new plug letting the TV understand that the cord is different. Try a few times. So TV on second attempt withoutr turning power on was plugged in and their was no light blinking anymore. I gave it 10 seconds and it didn't turn flashing red like it does even if you don't power it yet. So, I turned on TV and the picture showed, and then put on my audio reciever and it worked great back to normal.
Not everyone has extra PC cords lingering around, however Doug says you can pick them up for like $5.00. However take your cord out of back of TV, and go somehwere in house where you may have stored cords in the past, like I do for it comes in handy to see the shape of end that plugs into TV is the exact same as all PC connections for power.

So it may not be these Y coonection X stuff TV repair men talk of, and you may not have to go as far as taking your TV apart like I see some do. My example of don't replace your timing belt when it's a spark plug for your car, and don't be having repair men getting paid just to show up at your house. Try this it worked for me and my TV is 3 years old.

I also suggest to save your plasma TV, I was given a pointer to chnage your color temperature to cold, when you have option of like hot warm cold on your menu. I was gievn a pointer the cool color temperature will make your plasma last longer then to have in in warmer modes and it doesn't seem to really affect my 1080 picture. I did that after I plugged in my PC cord to TV. I am all set now. So it may not happen for you first attempt, so cycle and try. When I did this with original cord it was stubborn and after unplugging and putting back on it worked, then after I shut down again it wouldn't at all no matter how many times. A darn PC connection and different power supply cord did it as others in here look for an actual Phillips cord replacement whcih seems to be according to other bloggers non existant which I really don't know the truth to that. Doug said this was something Phillips Customer servioce didn't give pointers on, and the only person that fixed it was you or me. However advice is your tv gopes blnk sometimes and back on and your under warranty, call them ASAP and don't let them give you the run around to staul you deliberatly to get you passed the warranty period, from what I read is the Phillips compnay is like look, you paid us much money for your TV, and now you have the same problem everyone else does, and your warranty has expired, so in other words their attitude is take a jump in the lake pal.

It seems that the plug to PC that is now my TV power cord was more snug to rear to connect then original cord. According to Doug, the cords were shiiped from China ( go figure ) anmd their have been power issues even with Sony and much more for faulty power cords in which they are manufactured there. The PC cord was made in China, however it was a change that my TV seemed to enjoy, and I suggest you try this and give it a few attemps before you go spending 100's if not more then 1,000.00 to fix, when it usually means your better off just getting a new TV. Look the economy is bad and their are TV repair men, but that's how they make a living. For them to not get paid a decent fee to see your tv and fix it is not the way they can make their money by telling you to plug a PC cord into your TV and they get paid squat. So try that and good luck, my TV is working great. It's just some power cords over time just s#%t the bed.

Thanks Doug Mohr!

Wayland Williams

Posted on Apr 17, 2009

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