Panasonic plasma th-42px600u

[cb007cb]

Re: Panasonic plasma th-42px600u

Ok new DG board gave me black center screen with bright white strip at each end of tv fairly wide.Old board back in very light black with very light strips which you can only see when room is dark!!!!The strips look like they are burnt in screen which im hoping im wrong!!

[freakaftr8]

Re: Panasonic plasma th-42px600u

That's only cause of image retention from what the other board did. Panasonic plasmas are very temperament with image retention. It will go away when you get the tv working. Trust me. Hold down vol- on tv while pressing info 3 times.on remote. Get a service menu on the screen?

[cb007cb]

Re: Panasonic plasma th-42px600u

Neither board works with remote only the red on/off tried vol- ok3 nothing.On the old board right now, what you think? new dg is giving me different screen but still no picture?

[tw2005]

Re: Panasonic plasma th-42px600u

Just out of curiosity, all the boards that have been replaced, they were replaced with the exact same board revisions?

[cb007cb]

Re: Panasonic plasma th-42px600u

except for the dg board that was for the th-42px60u mine is the th-42px600u the numbers are the same and are supposed to be exchangable

[tw2005]

Re: Panasonic plasma th-42px600u

except for the dg board that was for the th-42px60u mine is the th-42px600u the numbers are the same and are supposed to be exchangable

maybe someone can confirm that , I can't but I am wondering. I know someone here in Aust had an issue getting a TV of the same era working here because of firmware issues and not getting the same revision.

At a glance the 60U and 600U boards are definitely different if what I am seeing is correct.

Part numbers TNPA3903BBS = 60U, TNPA3903BES = 600U

IC4020 missing on the 60U along with a number of other parts near there.

These are some firmware comparisons

DG board


IC1101
60U , TVRN840S
600U, TVRN842S

IC1102
60U, TVRN845S
600U, TVRN848S

DG-board , IC4022 & IC4023 are the same firmware for both

DT-board, IC8222 missing from 60U DT board but on the 600U it looks like this goes back to the DG22 but you have a the 60U DG installed so ?

D-board, IC9001,IC9003, IC9007, IC9303 are the same

I'm not going to pretend to say i understand how this all interacts but a different DG board does throw in an unknown variable into the fault finding and it is clearly different in the cct.

Hopefully someone out there has greater knowledge on whether this will be an issue or not.

[tw2005]

Re: Panasonic plasma th-42px600u

This is the post I was thinking of but the symptoms don't match what's happening with yours but an example of using a similar Dg board but with different firmware.

I may be throwing you off track but worth considering.

https://www.badcaps.net/forum/showth...ght=th-42pa60a

[tw2005]

Re: Panasonic plasma th-42px600u

Ah yes. I remember this one. After much trouble shooting and trial and error it turned out to be a main board issue. Many many caps with over threshold esr. Replace it. It's cheap enough I believe. You can use a th-42px60u as well but will lose front input jack connectivity but is a much more common board.

Hmmm, I missed this. Obviously you've tried the 60U DG I gather?

[cb007cb]

Re: Panasonic plasma th-42px600u

I now have the 600u dg back in no picture light on all screen.So will the solution be to get a replacement 600u board identical or could it be something else?
Iwas so looking forward to a picture with the dg board!!

[cb007cb]

Re: Panasonic plasma th-42px600u

freakaftr8 your post was why i bought the 60u board cause i was not worried about the front port not working.I guess to be 100 percent safe i have to get the identical board!

[tw2005]

Re: Panasonic plasma th-42px600u

freakaftr8 your post was why i bought the 60u board cause i was not worried about the front port not working.I guess to be 100 percent safe i have to get the identical board!

I'd wait and see if he confirms whether he's tried it before. He probably has. Most of the panasonics I've touched have been the newer ones where all these boards were combined into the single A board which makes it much easier to fault find.

The board you got may even be faulty? But I only put all that up because I saw it was different. Having read what freakaftr8 wrote I probably would have left it alone as I myself do not know for sure nor do I know if the replacement DG is the cause of the new symptoms.

I was looking for something possibly missed,board revisions came to mind.

[freakaftr8]

Re: Panasonic plasma th-42px600u

well if I were you I would definitely return that board as there's something not right about it the white bars on the right and left side to me would indicate that the board format is set in a different frame rate like 4:3 letter box mod of some type. I'm just stating from my previous repair the TV that I worked on for somebody that I was able to replace the board with a different revision and it worked my TV however the 20 blinks and it would freeze up and wouldn't respond to the remote at the same time maybe the boards bad maybe not maybe you have something going on with power supply voltages or the logic board. I'm not sure but definitely return The DG board if you can and get the proper revision board just to be certain.

At least all those can be ruled out.
on a side note the TV will still operate with the DT board removed you just will not have any analog tuner. for me not having the analog bored in place was easier for me to freeze spray and heat the main board underneath it to find the problem

[freakaftr8]

Re: Panasonic plasma th-42px600u

I should also note on the TV that I repaired I had a picture sometimes but it was intermittent but I still had tHe 20 blinks.

[freakaftr8]

Re: Panasonic plasma th-42px600u

I feel like an idiot. Here was my initial issue and posting on it. I apologize it was so long ago my TV was that 500u not the 600 but same scenario I replaced it DT board finally cured the problem.

sorry for the inconvenience
www.badcaps.net/forum/showthread.php?t=23230

[cb007cb]

Re: Panasonic plasma th-42px600u

I think i will get the right board and give that a go.I tried heat and cold with the dt off made no difference.Also i now have another red light on the upper right quadrant of the dt board is that normal?Thanks.

[KORHAN DEGIRMEN]

Re: Panasonic plasma th-42px600u

Hi for all of you.
I have a problem with my Panasonic TX-P42S20E. On 576i and 1080i There is a half vision on panel. Up side is ok but, down side is black or coloured. When i change the aspect ratio, problem is not solved. But when i change to 1080p or 720p, all panel is correctly working.
Some servives tells its a main board problem, but i downloaded the service manual of my model, it tells this problem can be because of some cards failure.(SC,SS,SS2,A,C1,C2 boards) Please let me know you lived a problem like this and how you solved. If you want i can send a photo