820-2101-A Video corruption


New member
I have a machine that was left at my shop for scrap. The video is corrupted, I tried new ram sticks did not help. I know this machine isn't worth anything but this is more a learn exercise for me.
It appears to me that I either have a bad gpu or bad vram. Not sure what the diagnostic steps are with this issue. I do have Jovy rework station and do have some experience with BGA rework/reballing. Please let me know what you think. Thanks. 2016-09-11 15.41.57.jpg
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