Good guys! I need some help
I recently bought a used processor, I don't know if it works, but the measurements are at least ok. what do you think?
normal diode measurements,
-
processor measurements: vcore 8ohms igp 5ohms.
-
L1785 :
with cpu 55 ohms
without cpu 1.6k
voltage with cpu 0.30V
Replaced apw7120 - same result.
Pin7 ocset to ground at power up with cpu.
Mosfets without problems.
-
Obviously vcore is missing, not to mention vram.
Basically no 1.2v
well, summarizing quite q36 (it was sending to ground with low signal vcore_en#) I have the 1.2v & vram but no vcore, as it should follow.
schematic and boardview attached ty so much
well the problem is that I basically don't have pwgood, which grounds the 5vsb of the q31.
-
pwm rt8871a
https://datasheetspdf.com/mobile/114...htek/RT8871A/1
1- pwok 3v
24 - vcc5 5v
31- vcc12 12v
47-pwgood 0v
48-enable 1.12v
I don't know what I'm missing to check for pwgood.
regards.!
[MOD EDIT]
Added link to schematic
I recently bought a used processor, I don't know if it works, but the measurements are at least ok. what do you think?
normal diode measurements,
-
processor measurements: vcore 8ohms igp 5ohms.
-
L1785 :
with cpu 55 ohms
without cpu 1.6k
voltage with cpu 0.30V
Replaced apw7120 - same result.
Pin7 ocset to ground at power up with cpu.
Mosfets without problems.
-
Obviously vcore is missing, not to mention vram.
Basically no 1.2v
well, summarizing quite q36 (it was sending to ground with low signal vcore_en#) I have the 1.2v & vram but no vcore, as it should follow.
schematic and boardview attached ty so much
well the problem is that I basically don't have pwgood, which grounds the 5vsb of the q31.
-
pwm rt8871a
https://datasheetspdf.com/mobile/114...htek/RT8871A/1
1- pwok 3v
24 - vcc5 5v
31- vcc12 12v
47-pwgood 0v
48-enable 1.12v
I don't know what I'm missing to check for pwgood.
regards.!
[MOD EDIT]
Added link to schematic
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