I have just acquired a Wii console, but the image displays artifacts/glitches. I have read that it is a problem with the GPU (Hollywood). Can this be repaired in a similar way to a PS3 by applying heat to reflow the solder balls?
How did you apply the heat to it? If you just tossed it in the oven, there a high chance that it'll be worse.
my preferred method is pouring lighter fluid all over it and then setting fire to it. not a helpful suggestion but maybe sell it as faulty and buy a working one
Buy a used one, if you can. They're pretty darn cheap and you might be able to find a modded one too.
I know its not a professional way of repairing a console, but I thought I would give it a try as I had nothing to lose.
Indeed, it also shows it was related to the issue. As mentioned above, Wiis are silly cheap at the moment - so nothing of great value was lost.