I will try to help you with this question.
I am afraid I have bad news... I do not believe the address board will fix this issue!
I think you have a blown TCP( tape carried package)- the driving IC that is embedded into the ribbon cable= plasma panel is the one that needs to be replaced !
You can try to replace the corresponding C board( where you have the issue) but from our experience it will be the panel
You can try to remove the C board connector on the area where you have the vertical lines, and
take a look closely( use a magnifier) to the TCP, you may see pin hole
onto this TCP- this is a sign the TCP is blown and the panel will need to be replaced
You said horizontal lines?
Sorry i mistake for vertical lines!
Did you removed the buffers in the trouble shooting process?
I think you only have a miss seated connector!
no i did not
Try first and check the connector on the buffer board where the brown ribbon cable goes into
look closely for the alignment of the cable to the connector
If this is OK, then yes, you need to try the corresponding buffer buoard
yes, this model has a buffer +SC board combined
but check first the connector!
on which board?
This is a very common problem, if someone tried to repair
On he SN on the left side where you have the brown ribbon cables comming from the panel
an the area where you have the black lines
remove and replace the ribbon cables on the SN board
They are kind of tight,and hard to remove or reset, make sure this brown ribbon cable sits correctly on this connector
I will do it. I'll get back to you
Any miss alignment on these connectors will cause the horizontal lines you have
Also since you replace the A board, check the white ribbon cable going from the A board into SN!
I checked those already
a miss alignment here can also cause a driving issue for the SN board
If all connectors on SN board are fine, then you will need the SN board
I'll check the SN board and get back to you
There is a slight chance the panel is defective, but when this is the case , you have only one line most of the time!- a cluster of line indicates either a connector issue or a defective scan IC on the buffer board( SN in your case)
I took out the SN board completely and re-installed it. All is good now. No more lines. You are awesome!