Seller Note “In decent condition. Dead, no display, no fans spin.”
Summary
- Looks OK, it has it’s its warranty sticker on
- Resistances
- VCore – 1Ω (OK)
- Vmem – 33Ω (Micron D9VVR)
- Display rail – 28.8Ω (OK)
- VDCI – 28.3Ω (OK)
- 5V – 6.3Ω+ (relatively high compared to other 580s, but OK)
- 1.8v – 4KΩ (OK)
- 12v – 6KΩ+ (OK)
- 3.3v – 3KΩ (OK)
- Voltages
- 12v – present
- 3.3c -present
- 5v – present
- 1.8v – present
- Display Rail – 0.91V
- VDCI & VCore & Vmem are missing
- Investigate the missing rails
Investigate Missing VDCI & VMem
If we proceed on the assumption that the voltage rails activate in the order
5V→ 1.8V→ Display Rail → VMem/VDDCI → VCore
Then, we can ivestigate either VMem or VDCI, also the POK from the Display rail that appears to be up.