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Model A1312 / Mid 2010 / 3.2 GHz Core i3 or 2.8 & 3.6 GHz Core i5 or 2.93 GHz Core i7, ID iMac11,3

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iMac Thin red vertical line halfway on 27" display (Mid 2010)

Hi,

Has anybody experienced anything similar? The Red line appeared not too long ago - doesn’t go all the way like in other cases I have seen. Red, quite thin just above halfway up - most visible on dark backgrounds, less so on others.

pics here:

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https://imgur.com/a/St98sc8

Mid 2010 A1312 (EMC 2390)

2.8 GHz Core i5 (I5-760)

16gb ram

Currently installed High Sierra.

The graphics card is Radeon HD 5750 - has been fine up until this appeared. No line on external display.

Any advice or direction for research is appreciated. Thanks!

Answer this question I have this problem too

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Did you open your system or have the system serviced?

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Just for the ram upgrade and HDD/SSD

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As you state the external display doesn’t show it we can surmise the issue is within the internal display assembly not the GPU logic. The OS level won’t be a factor either.

Here’s the IFIXIT guide to replace the display: iMac Intel 27" EMC 2390 Display Replacement and here’s the needed part [linked product missing or disabled: IF174-034]

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Thanks for the help. I think I won’t bother with changing the LCD as it’s not worth the money I think at this point. Good to know though, hopefully it won’t get worse.

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Steve will be eternally grateful.
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