Hello and welcome to JustAnswer! I am Pete, a TV expert, and I'm happy to assist with your question today.
A pink vertical line on your Plasma TV indicates that either one of the address cards is failing, or the plasma display has failed.
Having an address card replaced would cost around $150, however if the display needs to be replaced, this would cost almost as much as a new set, and that type of repair is rarely carried out.
Some electronic testing would be required to determine whether an address card or the display has failed.
WERE ARE THE ADDRESS CARDS?
These cards are inside the TV and will be labelled as the SS or SC cards.
I RECENTLY CHANGED OUT THE D BOARD . BECAUSE I HAD THE SAME PINK LINE AND A YELLOW LINE, THE YELLOW ONE WENT AWAY NOT THE PINK . DO YOU THINK I GOT A BAD BOARD OR MAYBE IS NOT INSTALLED PROPERLY?
Can you try removing each cable from the D board and fitting it back in place securely again, also checking for any damage to the cale.