iMac 2010 shows lines on all displays dead GPU???

[FinnJim3]

i brought a mid 2010 21.5" iMac and it shows lines down the display. at first I thought that it was a screen issue but I plugged in a second display and it showed the same lines so I think it is a GPU issue.

[Stefan Payne]

Yeah, if its on all screens, its the Motherboard.

If its only on the main screan it could have been the Screen itself.

[SupaKomputa]

Vertical lines sometime came from bad connector.

You can replace this relatively cheap.

Consult with a LCD expert before doing anything.

[FinnJim3]

2 minutes ago, SupaKomputa said:

Vertical lines sometime came from bad connector.

You can replace this relatively cheap.

 Consult with a LCD expert before doing anything.

I plugged in A second display and it showed the lines in the same spot.

[LukeLinusFanFic]

Just now, FinnJim3 said:

I plugged in A second display and it showed the lines in the same spot.

Did you plug it to a different port on your computer?

[FinnJim3]

Just now, LukeLinusFanFic said:

Did you plug it to a different port on your computer?

One of the displays was the built in and the other was an external display plugged in to the mini DisplayPort, so yes.

[SupaKomputa]

I see, i could also be a bad gpu connection.

Bad GPU shows artifact, a random dots appearing in random spot.

 

 

[FinnJim3]

Just now, SupaKomputa said:

I see, i could also be a bad gpu connection.

 

Do you think re-seating the GPU could help?

[SupaKomputa]

3 minutes ago, FinnJim3 said:

Do you think re-seating the GPU could help?

I really don't know, but you can try.

And while doing it, you can also clean up the dust.

[FinnJim3]

1 minute ago, SupaKomputa said:

I really don't know, but you can try.

And while doing it, you can also clean up the dust.

Okay, i will also change the thermal paste while i have the logic board out then.

[SupaKomputa]

Good idea.