I have vertical lines on my screen - about 2 inches wide - bands are dark and light all the way across the screen. I can't view pictures to correctly process (I'm a photographer). This is a vintage Mac and the part is "no longer available" except randomly through someone out there. In other words, Apple will not fix it as they don't have the part anymore.
Is this a good question?
Rep: 685.3k
3.4k
1.1k
2.6k
Apple's not the only one to not have this part. It failed so much that the law of supply and demand kicked in and drove the price to around $300. Prices, the last I checked were running $200 to get the video chip repaired. I have two of these machines sitting in the corner as my customers were not willing to pay for the cost of the chip and labor to put it in. You have to pull the logic board to install it and it's no easy job. We do have a new contributor helping to answer questions that does board level repairs but I don't know if he works on anything this old. Maybe he'll see this question and kick in. His name is Louis Rossman, You can call him here (347) 552-2258 or contact him on his web site here: http://www.rossmanngroup.com
He's on my Linked Network so I'll send him a message to look at this question and if he does this repair.
Was this answer helpful?
Here was Louis's reply: On iMacs it is nearly impossible to find new video chips - they are just not available. On his, what I can say, is 90% chance it is the VRAM and not the GPU. Since it is nearly impossible to find anyone reputable who sells new chips for iMacs, I don't work on them when it comes to graphics issues.
Hi i had the same problem, the solder of the vga is failing, you can open the imac and perform a reballing on the vga, that will solve the problem, however is not a super easy task
If your vga failed probably was because overheating, the root of the issue in the 2008 20" imac is still a mystery to me (apart from the bad internal airflow design) you can prevent future problems speeding up the internal fans or ataching an extracting fan in the rear up-left corner to force suck the hot air
Was this answer helpful?
Urban legend strikes again :-(
Past 24 Hours: 0
Past 7 Days: 0
Past 30 Days: 0
All Time: 128
