JustAnotherGuy
Member
Nope it is solid right now at 1.5V. It did used to be around 12.5V with some fluctuations but since then we have removed a few components so not sure if that should be expected.
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820-2915-a Spontaneous Shutdown, No Startup
- Thread starter JustAnotherGuy
- Start date
OK, we start from scratch then.
Remove F7040/1 and check if get stable C7040 voltage.
SMC_PM_G2_EN should stay at 3V.
Remove F7040/1 and check if get stable C7040 voltage.
SMC_PM_G2_EN should stay at 3V.
JustAnotherGuy
Member
F7040/1 were removed since post #40.
C7040 is solid 12.58V
SMC_PM_G2_EN solid 3.48V
C7040 is solid 12.58V
SMC_PM_G2_EN solid 3.48V
"F7040/1 were removed since post #40."
Wait, you say that we lost so many days without PPBUS_G3H on the board???
I asked you to do that for test purpose only.
I never could imagine you didn't solder back the fuses...
Wait, you say that we lost so many days without PPBUS_G3H on the board???
I asked you to do that for test purpose only.
I never could imagine you didn't solder back the fuses...
JustAnotherGuy
Member
So the changes I have noted so far are:
Post 34 - Remove R7940 and run a wire from 3V42_G3H to C7942
Post 40 - Remove F7040/41
Post 56 - Remove R7978
So what you are saying is undo all previous changes, except removing the fuses per post 64? None of the component removals / jumpering were reversed up to this point.
Post 34 - Remove R7940 and run a wire from 3V42_G3H to C7942
Post 40 - Remove F7040/41
Post 56 - Remove R7978
So what you are saying is undo all previous changes, except removing the fuses per post 64? None of the component removals / jumpering were reversed up to this point.
We really have to start from zero...
Put back all components, in original configuration.
Then post again voltages and signals from power on sequence.
BTW, let the o-scope aside, we don't need it.
Put back all components, in original configuration.
Then post again voltages and signals from power on sequence.
BTW, let the o-scope aside, we don't need it.