Panasonic vertical lines TCP65ST30

[Yrock]

As shown in the picture I am experiencing a vertical bar on the right side. I have replaced the buffer board (TNPA5327) and experience the same problem. I have cleaned the connecting ribbon cables and no changes. The ribbon cables do not look torn in any way. Can anyone advise where to check next? I'm pulling my hair out on this one.

[Hombre]

Re: Panasonic vertical lines TCP65ST30

Well i think it is either cable that is going from motherboard to the buffer (but since you already cleaned it it should be excluded), or most probably dying mainboard.
I think it is not the panel itself.

But, it is up to you will you gamble with new mainboard or not

[Yrock]

Re: Panasonic vertical lines TCP65ST30

Thanks for the quick response. I found a main board for $10 with free shipping so I figured it was worth the chance. Is it common for a failing main board to display these symptoms?

[tw2005]

Re: Panasonic vertical lines TCP65ST30

next step would be to go into service menu, perform horizontal flip and if the pink band went to left side, mainboard.

Check all board bolts especially sc and ss for security, chances are they'll be loose. if you have not had the SC board blow yet.

[Moreno83]

Re: Panasonic vertical lines TCP65ST30

This is a mainboard fault because it's still showing the picture. Apply some pressure on the heatsink and you will see it flicker/go away.

Just bad BGA solder.

[Yrock]

Re: Panasonic vertical lines TCP65ST30

Well the main board I ordered was dead so I put back the old main board but there is no heatsinks that I see. I did flip the image in the settings but the band stayed at the same position on the TV. Anything else I should try?

[Yrock]

Re: Panasonic vertical lines TCP65ST30

Here is the picture of the main board for reference.

[attainteddragon]

Re: Panasonic vertical lines TCP65ST30

if the discoloured section did not move with the screen image rotated, then it is not the main board at fault. :/