you have flashed the device with official firmware, without boost on mining, then they can not refuse warranty service
Those people are devils, due to the management and pressure, they are probably assuming all the gpus they receive were misused for mining. If they check a capacitor and determine that capacitor died because overclocking, they can just refuse warranty. They have all the power. Only way is to sue them if you think you are right that they should honor it.
A fan flew off an ASUS card and they denied warranty on it claiming physical damage.
MSI on the other hand RMA'd tons of cards, they knew what the cards were being used for and honored every RMA sent, when they didn't have replacement cards they sent a check for the amount originally paid. A month later they continued RMAing the same cards (they got restocked). On some of the RMA's they even did an upgrade.
They took back one that caught fire and the s/n burned off.
They took many back that had broken, non working or fans that flew off.
They took back ones that just didn't give any output.
ASUS lost a customer from the way they handled just one RMA and MSI gained one for life from all that they did. I also dislike EVGA for their RMA's, they denied a warranty because of a screwdriver scratch on the psu case even though the components on the inside quite literally blew up, the scratch happened when removing or putting the psu into the case.
I go out of my way to tell people to not buy ASUS, they make a good product but have crap support.
To those that want to know, the fan flew off of it because of a bad bearing, it also did not mine 24/7 like other cards.
