Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

[mu2]

Hi,

I'm trying to help a widow friend of mine with her television. It is a Panasonic TH-42PZ700U that has a horizontal bar about 5" wide the entire width of the screen. She said that originally it started from left to right and would go away - now it's always there. The set was manufactured in 2007. Sound is ok, bar is present on all the inputs.
I've attached a photo showing the issue.
I know very little about plasma tv's.
Please don't ask for photos of the boards. The set is wall mounted and she is continuing to watch the set.
If you are familiar with this problem in this particular set please respond.
She is considering a new television if it's a panel problem or not economical to repair.
Thanks.
Mike

[Ltank]

Re: Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

Without any testing or removing the back, I thinks its the Pannel/COF because it goes across the entire width of the screen

[freakaftr8]

Re: Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

Need a better close up picture of the fault are there lines between black lines? At first glance I would say its a buffer board issue on the Y sustain

in Panasonic lingo look at the SC board and there are SU and SD boards connected to it one of those boards most likely the SD bored a buffer chip might have gone bad

[tom66]

Re: Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

Could also be a loose panel connector.

[mu2]

Re: Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

Thanks to everyone for their input.
I looked through the other photos I took but none show enough detail of the screen problem. I think that there were fine lines within the horizontal bar.
Looks like I will have to make another trip to her house and examine the fault.

Ebay has some boards listed - is it the TNPA4253 that might be the culprit?
Here is a listing.
http://www.ebay.com/itm/PANASONIC-SD...item27dbe4e2e1


Mike

[anotherdude]

Re: Panasonic TH-42PZ700U Horizontal bar - Expert advice needed

I've had this problem at the top of the screen on a plasma previously but was completely black, I found it was a loose connector connecting the screen to the side boards

[mu2]

Re: Panasonic TH-42PZ700U Horizontal bar - Repaired!

Hi,

Just repaired the Panasonic TH-42PZ700U that had the horizontal bar issue.
I replaced the lower y-buffer board - part number TNPA4253.
There is vendor on Ebay selling that board for $19.95 + $8 shipping. It is listed under the Panasonic number TXNSD1HJTA. Shipping was fast. Highly recommend this vendor.
Be very careful that you get ribbon cables positioned correctly and don't do it with the power on!
Thanks to all that offered advice.

Mike