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Master thread for Panasonic plasma not turning on - Page 60

post #1771 of 1979
If you have 2 blinks you must apply the repair to both boards. It is highly recommended anyway.
post #1772 of 1979
I have one to run by you guys. Early 2010 TC-P54VT25. The TV started powering itself off or going into a power on/off loop a couple months ago. Now it will not turn on at all. A relay clicks like it's try but nothing happens. If you hold the button down for a couple secs, it will click again but nothing happens. If you hold down longer, it will start it's blinking LED diagnostic. The confusing part there is that it blinks 13 times. The manual (and every other reference) stops at 12 blinks. So what could this be? My guess would be the main board (A), but it could very well be the power supply board. A power supply would be a cheaper fix if that's all it is.

Any help is greatly appreciated.

Thanks....
Joe.
post #1773 of 1979
Quote:
Originally Posted by tom669 View Post

If you have 2 blinks you must apply the repair to both boards. It is highly recommended anyway.

What repair do you mean? I replaced the IC and Cap on both the MC201 & MC301 Boards.

I've also checked every fuse I can find, including the thermal fuse in the transformer talked about in this vid: http://www.youtube.com/watch?v=qQ_iLxx3Fj4
post #1774 of 1979
Hello all,
I have a Panasonic TC-P50S30 and I had it plugged into a surge protector but after a recent storm the tv will not turn on and there is no flashing red lights. I replaced the POWER SUPPLY NOAE6KK00005 but it still does not turn on or have the red light. Has anyone else ran into this situation? All the fuses tested fine and none of the capacitors appear to be bad.
post #1775 of 1979
Quote:
Originally Posted by NautikaL View Post

I have a P50G25 that's about two years old. When I press the power button the relay clicks and the power LED stays on steady, but the back light does not turn on and I cannot get to the OSD. The remote works to turn the TV on, but that's it. I have to push the power button on the TV itself for several seconds to turn it off, and doing so causes the relay to click twice (as far as I remember the relay normally only clicks once when turning the TV off).

I experienced this problem twice in the last week when the TV shut off while I was watching and refused to turn back on, exhibiting the symptoms above. After unplugging the power for an hour it turned on just fine, but that trick isn't working now.

Any idea what board needs to be replaced or how I can go about figuring that out? All I could find was this flow chart (below) in the service manual but wanted to see if anyone knew of this issue before I go looking inside the set.


So the issue randomly went away and has now gotten really bad in the last month. The TV rarely goes on the first time, and I have to power cycle it several times to get it to turn on.

Interestingly, the TV will display 13 blinks after ~5 minutes. The service manual only goes up to 12 blinks and Panasonic is absolutely useless in helping: "Just call one of our trusted service centers and spend $300 in parts/labor!" Does anyone know what 13 blinks means so I can order the correct part? It looks like it's probably the A-board, but I would like to be more certain before I shell out $100




Quote:
Originally Posted by Smilin Joe View Post

I have one to run by you guys. Early 2010 TC-P54VT25. The TV started powering itself off or going into a power on/off loop a couple months ago. Now it will not turn on at all. A relay clicks like it's try but nothing happens. If you hold the button down for a couple secs, it will click again but nothing happens. If you hold down longer, it will start it's blinking LED diagnostic. The confusing part there is that it blinks 13 times. The manual (and every other reference) stops at 12 blinks. So what could this be? My guess would be the main board (A), but it could very well be the power supply board. A power supply would be a cheaper fix if that's all it is.

Any help is greatly appreciated.

Thanks....
Joe.

Sounds like we have the same issue. Props to Panasonic for not including all blink codes in the service manual...
Edited by NautikaL - 6/8/13 at 11:12am
post #1776 of 1979
13 blinks is fan SOS.... doesn't make much sense on a set without fans.
post #1777 of 1979
Anyone know what the "Emergency" setting in the service menu refers to? It is "ON" by default. Maybe turning it off disables the protection circuit?
post #1778 of 1979
Quote:
13 blinks is fan SOS.... doesn't make much sense on a set without fans.

Mine has fans and they don't come on. What would that point to?

Thanks,
Joe.
post #1779 of 1979
Quote:
Originally Posted by Smilin Joe View Post

Mine has fans and they don't come on. What would that point to?

Thanks,
Joe.

The fans only turn on after some other blinks have cleared. For example if you have an immediate 2/4/5/6/7/8/10 blink code you will never see the fans spin.
post #1780 of 1979
I have a TH_50PZ80Z 50" plasma with the same problem, I replaced the main board/power board and the sub power board. I still have either the 2 blinks or the 10 blinks problem depending if you reset the unit by holding the power button for a little while also, I did replace the D board the one behind the A board and still the same. I will have to see if replacing the A board will fix the problem so, I would recommend that you replace the Main Board that is probably your best option. I do not really know what the problem might be with my TV either the main board failed again or it is the A board the root of the problem.

Any ideas?
post #1781 of 1979
Don't forget about 99% of parts on eBay are pulls from cracked/scrapped TVs.
So you may have got a dud part.
Around 20~30% of parts appear to have problems when received, despite seller's claims that they are tested, few if any sellers actually do test the boards.
post #1782 of 1979
Know of anywhere i can get one that will work for sure?
post #1783 of 1979
thanks man I did like you sed and everything work now smile.gif
post #1784 of 1979
Hi guys, just joined the forum since I found this thread online after trying to figure out what's wrong with 50S30. I have the 7 blinking lights and saw some information that indicated the problem might be the SC board. I replaced that, but I still get the 7 blinking lights. I downloaded the service manual and followed the procedure for checking the SC board. I jumpered the SC50 connector and powered the TV on. With the old board, I continued to get 7 blinking lights. With the new one, the power light stays illuminated and a green LED lights up on the board. I'm guessing this means that the new board is functioning correctly?

So it looks like my old SC board was indeed bad, but there has to be something else going on because the problem is still there. Can someone point me in the right direction?
post #1785 of 1979
I could really use some help. Last night we had a thunderstorm and I am not sure if its related or not but this morning my TV no longer works. I have a Panasonic 42" TH-42PZ80U Plasma.

When I hit the power button the fans come on, the screen turns a light gray and the red light comes on (no blinking at all). No picture, No sound. When I hit the power buttom again, its takes about 15 seconds and then the TV turns off, but then immediatly it turns right back on again with the same issues as I have listed above.

Anyone else have this issue? Any help on what part needs replacement or how to fix?
post #1786 of 1979
Quote:
Originally Posted by kuip64 View Post

I have a Panasonic 42" TH-42PZ80U Plasma. When I hit the power button the fans come on, the screen turns a light gray and the red light comes on (no blinking at all). No picture, No sound.

Usually that means the A-board is defective, as numerous previous posts (such as post #1729) have mentioned.
post #1787 of 1979
Quote:
Originally Posted by irocbsa View Post

50S30. I have the 7 blinking lights and saw some information that indicated the problem might be the SC board. I replaced that, but I still get the 7 blinking lights.

Could possibly be a SU or SD board problem. There is a firmware update available from Panasonic that replaces faulty firmware that had a tendency to burn out the SC boards.
post #1788 of 1979
Where is the cheapest place to buy a new A-board? About how much do they cost?
post #1789 of 1979
Quote:
Originally Posted by tomwil View Post

Could possibly be a SU or SD board problem. There is a firmware update available from Panasonic that replaces faulty firmware that had a tendency to burn out the SC boards.

Is there a good way to narrow it down to which on it is? I was just going to buy both and replace them but it looks like SU boards are impossible to come by right now.
post #1790 of 1979
I would not be so comfortable thinking it's just one thing. It's a lightning strike or heavy power surge; it could have taken the power supply and all boards. Sorry to say but I would be looking to replace it. Do you have insurance? Homeowners or renters? I am an insurance adjuster and can't tell you how many times someone turned in a claim for a "fried" plasma (or lcd for that matter) and I have a repair person look at it and there's just too many things that can be damaged from a good surge. I pay to replace them every single time.
post #1791 of 1979
Quote:
Originally Posted by irocbsa View Post

Is there a good way to narrow it down to which on it is? I was just going to buy both and replace them but it looks like SU boards are impossible to come by right now.

This thread might give more insight, and contains the technical guide for the 2011 models.
post #1792 of 1979
Quote:
Originally Posted by tomwil View Post

This thread might give more insight, and contains the technical guide for the 2011 models.

Thanks for all the help guys. I replaced the SU and SD boards and we're back in business. I'll do the firmware update before I use the TV again.
post #1793 of 1979
My 50 inch panasonic gets 3 clicks from relays but 2 blink code after power button is pushed. If i hold down power button i get the 10 blink code. I've disconnected a5,a6,a7 and i get a white screen without pushing the power button.(Should the fans spin? They don't) I tested the continuity on the 1st pin on the p7 connector and it chirps for a second then runs infinite. I tested for 15V on the 7 pin p25 connector and i momentarily get 15v then it drops off. Any suggestions? The confusing thing is sometimes the TV works but most of the time it doesn't.
post #1794 of 1979
Wanted to run something by the experts on this thread - btw thanks to all the informative posts I was able to troubleshoot this myself.

Panasonic TC-P50G15 manufactured 2009.

Based on the 1-blink error code which corresponds to "STB 5v SENSE Time Out", I opened up the set and measured for the presence of voltage at the relevant connector/pins both on the P-Board as well as the A-board. I have 5V on both sides of the wire on P7 pin 5 and P25 pin 9, so I have ruled out a comm issue between the two boards.

Since the correct voltage is present on the A-Board, would anyone care to confirm my suspicion that the A-Board is defective and that replacing it (neighborhood of $200 parts) would be a solution to this issue?

TIA
post #1795 of 1979
Quote:
Originally Posted by StuJac View Post

I would not be so comfortable thinking it's just one thing. It's a lightning strike or heavy power surge; it could have taken the power supply and all boards. Sorry to say but I would be looking to replace it. Do you have insurance? Homeowners or renters? I am an insurance adjuster and can't tell you how many times someone turned in a claim for a "fried" plasma (or lcd for that matter) and I have a repair person look at it and there's just too many things that can be damaged from a good surge. I pay to replace them every single time.

Quote:
Originally Posted by kuip64 View Post

I could really use some help. Last night we had a thunderstorm and I am not sure if its related or not but this morning my TV no longer works. I have a Panasonic 42" TH-42PZ80U Plasma.

When I hit the power button the fans come on, the screen turns a light gray and the red light comes on (no blinking at all). No picture, No sound. When I hit the power buttom again, its takes about 15 seconds and then the TV turns off, but then immediatly it turns right back on again with the same issues as I have listed above.

Anyone else have this issue? Any help on what part needs replacement or how to fix?

Quote:
Originally Posted by tomwil View Post

Usually that means the A-board is defective, as numerous previous posts (such as post #1729) have mentioned.

Anyone else have thoghts on this? With a lightning strike am I better off just forgetting trying to fix it? Has anyone had luck fixing a TV with possible lightning strike damage? Also, where do I buy an A-board?
post #1796 of 1979
I'm going to attempt to fix my 10 Blinks problem after watching the video that's been posted here (http://www.youtube.com/watch?v=LjpGKaBt8hg). I've done some soldering before but the main thing I'm worried about is removing the P board from the frame without damaging myself or the board. Any tips on this would be appreciated thanks.
post #1797 of 1979
Quote:
Originally Posted by kuip64 View Post

With a lightning strike am I better off just forgetting trying to fix it? Has anyone had luck fixing a TV with possible lightning strike damage?

A same-year Panasonic model that suffered a lightning strike was repaired here.
post #1798 of 1979
Hi all, came across this epic thread whilst looking for a solution to my all too common problem it seems!! mad.gif

We own a Viera TH-50PZ70B which we've had from new in 2007 and hasn't given us any trouble before. Until yesterday. On pushing the power button and then channel button on the remote the screen remained black?

Now i've trawled back through this thread but i'm getting a bit lost with it all tbh!

Symptoms are:

Screen stays black on pushing power button, the red power light blinks when pushing the channel button on the remote but doesn't switch to green.

If i hold down a channel button on the remote then push the power on button on the tv the red will switch to green like it's going to come on but doesn't.

The batteries in the remote are new, and i've tried a spare remote with no luck. Left the tv switch off at the mains overnight as a last resort in case something had overheated but it's still the same.

I read about the power led flashing fault codes but mine doesn't seem to be doing that. It just rapidly blinks maybe 30-35 times before going back to solid?


Now as it's about 7 months outside of warranty and probably only worth around £300 is it worth me going to the expense of trying to get it fixed or is it only fit for the bin now?


I'm fairly competent with tools but as a mechanic normally used to working on cars... But if it's a simple case of swapping a power board or the like out then i may just give it a go.


ANY advice happily received as i don't fancy blowing myself up wink.gif


Thanks in advance,

Lee.
post #1799 of 1979
Hey guys. I've been trying to find an answer for my problem but no one seems to know whats going on with my TV. My TV is connected to a good monster surge protector. Sometimes when my wife or I leave the house we flip the switch on the wall to off and it turns everything on the circuit that the TV and accessories are on. Well when the switch is hit to off the TV goes off and won't power back on. The Power indicator light isn't solid red or even blinking. This is he 4th time we had done this. Sometimes it comes back on in a few hours and sometimes it take a day or longer and then poof comes back on. Does anyone have a solution to this?

I think the set is a TCp42u or something on those lines.

Mark
post #1800 of 1979
I'll take a shot. Do you unplug and plug back in after each event? Mine will do that if the power is suddenly cut on it but I then get the 10 blink code. I unplug, wait 20 minutes and plug back in. Works every time.
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