Recently, my 27" iMac Mid-2011 had a graphics card failure (an AMD Radeon HD 6970M 2GB GDDR5).
Even though the computer now is vintage-classed, I still want to repair it. Unfortunately, Apple-authorized service partners are not allowed to service vintage-classed computers, so I had to turn it in to an unauthorized service shop.
The service technician claims to have found a used ATI HD 6970M 1GB from some secondary market supplier online. Since the card is used, he recommends that the supplier solders a new non-used ATI chip of the same type onto the graphics card board.
I have never heard of this procedure before and I am unsure if this is a recommendable idea. My concerns are are mainly if this is:
- (A) At all recommendable to cushion against chip failures of a used card.
- (B) If there are any safety concerns (e.g. electricity risks) due to doing this.
(The cost of the soldering operation is not a major concern although it has bearing, he says the soldering of the new chip will be $35 USD, added to the price of the used card which sells for $520 USD).