I used to fix computer motherboards and graphic cards for years but I didn't read the thread carefully , true , things I that learned I got from a trained old serviceman.
I'm actually 34 yrs old and got at least 300 repaired motherboards graphics and PSU's behind me that had bad caps , mosfets , mosfet drivers or generally fried chips on them but I will just stop answering to this.
If your fixing mobo and gfx your doing it wrong, they are and have been a replaceable component of computers for last 10yrs or more, unless you work for ATi or one of them brands your doing it wrong,
You can repair a some parts of a psu but NOT mobo's and gfx the boards are so multi layed not even do they fix, they swap some chips which as a service repair person you have no access to.
If your gonna claim you solder onto or repair a mobo in the last 20yrs
Just look at the side of a mobo or gfx, hue hue ,,
really dude,