ShmoeMo Posted September 3, 2019 Share Posted September 3, 2019 Hey guys. Recently cut the vrm off a dead asus 780 and now am wanting to get it ready to put on a 750 ti. Problem i am facing after hooking up the enable pin to 3.3v is that the vrm is outputting 1.4 odd volts BUT it cant supply any current. Just putting a simple 8ohm speaker across the output makes it drop to 200mv. The controller is an ASP1212 (Link below) Is there something i have missed when enabling the controller?https://www.infineon.com/dgdl/pb-asp1212.pdf?fileId=5546d462533600a40153567f4b2128a4 Quote Link to comment Share on other sites More sharing options...
Guest Ziken (BANNED) Posted September 4, 2019 Share Posted September 4, 2019 hello, activate this controller solder VCC, EN and PSI to 3.3V Quote Link to comment Share on other sites More sharing options...
Noxinite Posted September 4, 2019 Share Posted September 4, 2019 (edited) 2 hours ago, Ziken said: hello, activate this controller solder VCC, EN and PSI to 3.3V ? ? Edited September 4, 2019 by Noxinite 1 Quote Link to comment Share on other sites More sharing options...
ShmoeMo Posted September 5, 2019 Author Share Posted September 5, 2019 15 hours ago, Noxinite said: ? ? Why the angry faces Noxinite? I have only just woke up so im pretty slow at the moment XD Quote Link to comment Share on other sites More sharing options...
ShmoeMo Posted September 5, 2019 Author Share Posted September 5, 2019 Also just found i dont even a supply voltage to the controller. I swear i had one when i first cut the vrm off. Ill put a dc -dc converter for the 3.3 and will post and update after that Quote Link to comment Share on other sites More sharing options...
ShmoeMo Posted September 5, 2019 Author Share Posted September 5, 2019 (edited) Ok then, i have a 3.3 reg setup on the controller now so PSI, VCC and EN are getting the required voltage and now im getting 3.8 volts of the vrm but still not current capabilities. the 8 ohm speaker still drops it to like 200mv. Also, im guessing the VRTN pin is for feedback? Edited September 5, 2019 by (PTP) ShmoeMo Quote Link to comment Share on other sites More sharing options...
Noxinite Posted September 5, 2019 Share Posted September 5, 2019 8 hours ago, (PTP) ShmoeMo said: Why the angry faces Noxinite? I have only just woke up so im pretty slow at the moment XD Quote Link to comment Share on other sites More sharing options...
ShmoeMo Posted September 5, 2019 Author Share Posted September 5, 2019 14 hours ago, Noxinite said: Thats pretty messed up, sorry to hear that he did that to you and others. How has he not been banned from here yet? 1 Quote Link to comment Share on other sites More sharing options...
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