Got the one card unbricked! The one with the fans that spin was able to be unbricked by bridging pins 1+"5"
It would be helpful to try towards uncovering a solution if we knew what happened to these cards that effectively bricked them. From how it has been presented it seems like one morning you woke up and 3 of your cards suddenly wouldn't work. What preceded the bricking? Bridging pins through power cycles seems like a very unfortunate way to try and get your cards to work; at best this seems like a temporary solution. You are running windows, is that correct? I gathered that from the way you worded OP.
When I run into problems like this, or almost any miner I know that runs into problems like this they simply send their cards for an RMA or something along those lines. Is there any reason this is not a consideration currently? Some hobbyists or stubborn engineers always have their reasons.
They were bricked by mass flashing ROMs onto the cards. I flashed about 10 cards with the same ROM and these few got bricked. The ROM was one I edited myself from the saved stock BIOS of one of the cards --all cards are the same model.
Yes, after trying everything, I think I will RMA the 2 cards. Yes, I am running windows on the BIOS flashing machine, but the cards will go into a Xubuntu miner. Bridging the pins has worked for a few cards, but usually the fans are spinning on a card that is able to be unbricked. Hopefully the manufacturer will look past the fact that incorrect BIOS's were flashed onto the cards!
From now on, I will edit each BIOS individually to be safe.