Looked closer at the card fan connectors and Y cable (one that spins has 3 and the "dead one" has 2), it definitely should have spun up. It is too late here but will open it up and use a continuity tester to figure out if the cable is damaged anywhere.
Looked at the Y cable and the voltage pin was not connected to the cable (red). Good thing the connector had a solid metal part sticking out so that i could solder the cable back to it. Don't know i have the tools or dexterity to crimp cables that thin and soft.
Both fans spin now and the one that sits nearer to the chip spins up more when the card is under heavier load (most likely from the aditional voltage supplied via the extra wire).
Temperatures not that different under load, 69-70 now compared to 76-78, which is probably why i did not noticed sooner, especially when idling, difference is probably smaller.
I was not the one that noticed. It was my nephew
. Ever since he was 5 and came to visit the first thing he asks is "can we fix something". He helped me or watched (if it was too dangerous) fix stuff from replacing broken shovel handles to changing broken outlets, replacing heater components or pipes, modding or fixing pcs, some of his toys or tri/bike.