I have two dead GPU at hand, is there any tutor on how to fix this GPUS? Someone told me GPUs have fuse on them but I don't even know how their fuse looks like, they aren't like fuse you would find in every other electronic parts, any tutorial link?
I would suggest cleaning the entire gpu boards you had my friend, then check the fans installed on it. Sometimes fan and cooling heatsing won't work due to poor heat transfer and dissipation. Indeed, there's fuse that disconnects power on gpu so basically it tripped off when problems existed particular with short circuit because of overheating.
Here's the link below that might help you solve your concerns.
https://youtu.be/Vz1UTQW7PC0This video doesn't have anything to do with pointing the fuse out on GPUs it's all about using heat gun to resit the chips on the graphic cards, this is a different case from what OP is refering to I believe