27" display with 2560 x 1440 pixels resolution Thunderbolt & MagSafe cable attachments

92 Questions View all

What is causing barely seen vertical line

I have a thunderbolt display that recently showing a barely seen vertical line (see picture) some kind of noise, there is nothing else wrong, neither color or picture.

I was wondering if its noise from power supply or logic board or T-CON board, the lcd is LM270WQ1-SDB3.

I dont have a schematics and can not find it either by googling (checking probe point with oscilloscope ).

link to picture:


thanks in advance.

Ted :)

Answer this question I have this problem too

Is this a good question?

Score 1
Add a comment

Free shipping on all orders over $100 or containing a Pro Tech Toolkit!

Browse Our Store

1 Answer

Most Helpful Answer

The ribbon wire inside of the monitor may need to be "reseated". Basically unplugged and plugged back in. Before you go through all that trouble try to eliminate ALL electro-magnetic sources of interference. If it persists, it may be the ribbon wire.

Was this answer helpful?

Score 2


How about a link to how to do that?


http://google.com <-- try this one, John. :)


Add a comment

Add your answer

ted lindsay will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 3

Past 30 Days: 11

All Time: 260