Panasonic 50PX600U Plasma 10 blinks wont turn on

**nmg555** · 09-15-2012, 05:28 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

The 10 blinks includes the standby circuit so is it safe to conclude that the standby circuit has a fault? The tv won't even go into standby, it immediately goin into the blinking error code. I would think if it was the PA or video board which is also covered by 10 blinks that the tv would still go into standby and when turning the tv on the error code would display? If I am correct that it is most likely the standby circuit could someone please tell me which board Is responsible for this process? Is it integrated into the power supply board? Or is there another board that manages the standby power? Any input would
Be greatly appreciated.

**tom66** · 09-16-2012, 02:55 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Try this:-
http://www.youtube.com/watch?v=LjpGKaBt8hg

**nmg555** · 09-17-2012, 10:50 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

A good Samaritan randomly emailed me and provided me with a document from Panasonic for 9th generation plasmas which was a flow chart to diagnose the 10 blink error. There was two charts, one for 10 blinks when Plugged in and one for 10 blinks when turned on. Being my situation I followed the 10 blinks when plugged in flow chart which I followed and left me off at the power board needing replacement. So as long as these flow charts are reliable and accurate then the power board is the source of my 10 blink error.

When I swap out the board and confirm that was the problem I will post a conclusion as well as the flow charts to help those who stumble upon this thread looking for answers.

**nmg555** · 09-22-2012, 05:04 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Well... as my luck would have it i recieved the replacement power supply today only to end up with 2 defective power supplies. The replacement one does nothing at all, not even a relay click or error light. the previous board set off an error light and the relays could be heard.

I checked the fuses and all are well. The board comes with a warranty but i paid $35 and it will cost at least $10 to ship it back and i have no money left at all so i guess im stuck with having to get one board working out of the two. Any ideas on what typically goes out that would cause the relays not to click?

I was hoping to have this tv fixed before tuesday but im starting to think that wont happen.

**tom66** · 09-22-2012, 05:23 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Who did you buy it from? You should be able to claim back return postage if it was through someone like on eBay. I don't know about the US, but here a power supply of approx that size would cost £4 for me to ship 2nd class; that would take two days to get there, and wouldn't be tracked (though you do get proof of postage), but would be OK for most things.

If you want, stick it on craigslist for $100-150 and someone will buy it to repair.

Usually if the relays won't click, I suspect the standby supply voltages, such as 15V standby.

**nmg555** · 09-22-2012, 05:38 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Shipping prices here can be quite obnoxious. A board of this size would cost around $8 to ship the slowest and cheapest method. ebay does not make the seller pay for return shipping so im on my own and if i choose that route i would have to wait for it to arrive and then wait until i have enough money to purchase another seeing as all the others are slightly more expensive. I would like to part the boards together and get one good board this weekend and hopefully a working TV.

Im quite determined to get this TV working since i really need one for my living room and i am finally able to get the cable hooked back up again and i would to enjoy the return of my cable with a nice big plasma TV.

What produces the standby voltages? i have the old board which does make clicking sounds and a soldering iron so i can swap out parts. im not sure which board would be easier to get working. the newer board i feel as though would be fine once the relays are getting power.

Originally posted by tom66

Who did you buy it from? You should be able to claim back return postage if it was through someone like on eBay. I don't know about the US, but here a power supply of approx that size would cost £4 for me to ship 2nd class; that would take two days to get there, and wouldn't be tracked (though you do get proof of postage), but would be OK for most things.

If you want, stick it on craigslist for $100-150 and someone will buy it to repair.

Usually if the relays won't click, I suspect the standby supply voltages, such as 15V standby.

**tom66** · 09-22-2012, 05:45 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Did the link I posted not provide any help? Is your TV completely different?

**nmg555** · 09-22-2012, 05:55 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

I have not had a solid internet connection good enough to watch any youtube videos but i did just try to load the page and my tv is not listed in the description i see alot of PZ's i have the 50PX600U. The 9th generation plasmas seem fairly close together in construction but i cannot load any videos at the moment.

Originally posted by tom66

Did the link I posted not provide any help? Is your TV completely different?

Attached Files

**tom66** · 09-23-2012, 12:27 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

If you send me your email address by PM, I will send you a copy of the video file. Then you can download it and watch it later. Your board does look similar.

**nmg555** · 09-23-2012, 09:36 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

I was able to watch a piece of it this morning by leaving the video loading all night and i see that it is referring to the small boards that stick up off the main board. my board has 4 of them but none that look just like the ones in the video. If i knew which one supplied the power for the relays to click i could just swap it out but im not very good at reading schematics yet. im guessing it is the MC502 board (Relay/PFC control module) at least thats what makes sense to me from what i can figure out in the block diagram.

Originally posted by tom66

If you send me your email address by PM, I will send you a copy of the video file. Then you can download it and watch it later. Your board does look similar.

**tom66** · 09-23-2012, 09:54 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Is it possible for you to link to a picture of your PSU, or upload one?

**nmg555** · 10-01-2012, 10:08 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

There should be an attached picture in post #9.

I tried swapping parts but that did not go well at all. i was able to get a full refund without shipping it back so i bought another board and now i still get the 10 blinks. apparently the pansonic flowchart is not foolproof.

the flowchart starts off by saying remove DT board. still 10 blinks? yes, so then i move on to disconnect connector PA40. still 10 blinks soi move on to 14v present at pin 1 of p10. no there isnt any voltage. disconnect p10 is 14v present at pin 1 of p10. still nothing- replace power board.

I doubt that this is third defective power board. something else is wrong here and i cant figure out where to look next. this tv is costing me much more than i expected.

Originally posted by tom66

Is it possible for you to link to a picture of your PSU, or upload one?

**nmg555** · 10-17-2012, 04:20 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

so i assume this tv is nothing more than oversized paper weight? nobody seems to have any thoughts on a possible problem now that i swapped the power board. I wish i could find someone familar with this particular tv. its taking up way to much room on my workbench and not having a living room tv is starting to get old.

**nmg555** · 10-23-2012, 08:30 AM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

ok, so heres some numbers i just got.
after reading through a different panasonic manual i found this:

If the SUB 5V,
SUB 9V or MAIN
3.3V is missing
on the DG Board,
the unit goes into
shutdown.
The power LED
blinks ten times.
The voltages are
monitored on the
DG board by the
MPU, IC1103.

So to test these voltages there is test points on the PA board for each.

while plugged in and blinking the error code all 3 had no voltage but with the test points connected and unpluggign and plugging the tv back in the Main got up to 1.5V before the tv went into shutdown and the other two got up to 2.5 before shutdown. not sure if its just my digital meter too slow to read the full voltage before it shutdown. When unplugged i tested resistance with the ground to see if anything was shorted. the Main 3.3 has a solid connection to ground and the other two connect for a fraction of a second and then read open.

Im no expert but im pretty sure the +Main 3.3 shouldnt be grounded out. could it be the PA board has a short which is dumping the power to ground and tripping the error?

**nmg555** · 10-23-2012, 01:18 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

This has to be a simple answer for someone who has any background in circuit boards.

here is a link to the pdf for the service manual. the PA bboard schematic is around pg. 82.

You have to wait briefly for the download link under the picture.

All i need to know is if the main 3.3V test point being connected to ground is normal (Perhaps a switch?) or if this a short and the cause of my problem.

I need to know ASAP there is a good deal on this board right now and i dont want to miss it i already invested far too much.

**gilly1984** · 10-23-2012, 02:11 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

Originally posted by tom66

Try this:-
http://www.youtube.com/watch?v=LjpGKaBt8hg

The power board is different.

**gilly1984** · 10-23-2012, 02:15 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

As you are getting the flashing red light, try and hold the power button down for between 10-20 seconds. Doesnt always work the first time so try 10 seconds, 15 seconds and 20 seconds.

Just seen a vid on youtube of a guy with the same problem. This is just a work around though but will atleast show you the tv working hopefully.

http://www.youtube.com/watch?v=fpWNsh7k51o

Just read some of his comments and he had the problem because of an hdmi plugged into it. Unplug all hdmi connections.

**nmg555** · 10-23-2012, 02:15 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

yes. post #9 should have a pic of my power board which is in fact different.

I have used 3 different power boards so i think that can be ruled out.

but as for a test point having a ground connectionto the ground on the board
is that normal? even though none of the others have a connection to ground

Originally posted by gilly1984

The power board is different.

**gilly1984** · 10-23-2012, 02:19 PM

Re: Panasonic 50PX600U Plasma 10 blinks wont turn on

I dont fully understand what you mean, still a newbie here.

Can you show us a pic of what you mean. Try get a pic with your dmm too whilst showing us the ground.

Panasonic 50PX600U Plasma 10 blinks wont turn on

Panasonic 50PX600U Plasma 10 blinks wont turn on

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Related Topics