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GTX 970 Jetstream Fan Spin, no image and core not heating up repair

From Repair Wiki
GTX 970 Jetstream Fan Spin, no image and core not heating up repair
Device GTX 970
Affects part(s) Whole board
Needs equipment multimeter, soldering iron, soldering station
Difficulty ◉◉◉◌ Hard
Type Soldering


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Problem description

Repairing of a likely short on 12V which blew the corresponding fuse on a Jetstream GTX 970.

Example image (Figure 1) -- No image yet. Help expand this page by uploading it!

Symptoms

  • Not turning on
  • No fan spin
  • Not detected
  • All voltages missing

Solution

Most likely a problem with a VRM, check if any of the 3 fuses (AF2-10.0V125TM, colored brown, about 6x2.5x2mm and have a capital letter printed on them) are broken. The fuse is most likely broken due to a failure of a mosfet chip, however less likely but still possible, failures of any of the surrounding capacitors/ resistors. A deteriorated thermal pad, causing the aluminum heatsink to short the SMD capacitors is also a possible cause.

Example video: (Aluminum short & failed mosfet/inductor)