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PHorv
Beginner
844 Views

DN2800MT no power downstream of input PFET.

I am powering the board with modified ATX and 12V via DC input jack. Things worked good for about 2 months. One time I pulled the DC input plug without shutting the PC off first. And after that board would not boot. I have 12V at the inlet, but none of the other supplies come up. Both inlet PTC fuses buzz out good. Input pfet is SOIC-8, Single Quad Drain, Triple Source. I have 12V at the source(inlet side) I do not have 12v on the quad drain. I am also noticing that on the drain side of the PFET, power and ground are shorted. I get continuity across some of the big caps. I lifted the gate pin of the PFET and power and grounds are still shorted. So there is an issue downstream of PFET. Any help would be appreciated.

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1 Reply
Allan_J_Intel1
Employee
29 Views

I recommend contacting Intel support for warranty options at:

Online warranty:https://servicerequestmgmt.intel.com/webticketui/emailpage.aspx Service Request Email

Chat support: http://www.intel.com/p/en_US/support/contactsupport Contact Support

Allan.

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