I got scammed on eBay for an RX 480 4gb I bought for $80. The card is completely dead; no fan spin, no LEDs, computer doesn't POST with it installed. I'm already in the process of the chargeback to get my money back, but in the meantime I thought I could screw around with this thing and maybe bring it back to life.
Unfortunately I can't do the infamous oven trick as I only have one oven and baking the GPU can spew some nasty fumes into it (bad idea for the oven I use almost daily for food). I have a $10 soldering kit (wee) and a $10 multimeter, and basically no experience with electronics