GPU Still not working after buying new one for iMac
Hi i recently just got a new gpu for this iMac i am trying to repair and the iMac is still not showing a display. diagnostic led #3 is still of (this LED indicated if the iMac is communicating with the GPU).I don't know if i installed it correctly or something like that but if someone could help that would be great. the iMac does do a boot up chime so the motherboard and psu is still working.
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