Paul20
Member
Last Activity: 05-04-2025, 03:20 PM
Joined: 07-26-2022
Location: Italia
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Thanks a lot for the answer. -
Swap Super I/O Lenovo Ideapad
Hi, I would like some advice.
I have two motherboards, one with a dedicated GPU and the super I/O with obvious burn marks on it, and another working motherboard without a dedicated GPU.
My question is: can I swap the super I/O from the motharboard without dedicated GPU to the one with dedicated GPU? Will it work anyway or is that super I/O taken from the motherboard without GPU only good on motherboards without dedicated GPU?
The motherboards are exactly identical even in terms of versions...the only difference concerns the dedicated GPU in one and not in the other. -
Re: Macbook A1466 820-3437-A no green light and fan speed full
Maybe I understand what you mean, and that is that in any case the innermost spheres may not undergo changes.
So it would be ideal to reball the whole chip, if I understand correctly.
I don't think I have a suitable stencil, so I would have to buy one resulting in waiting before receiving it, and despite this, there is always to understand if this will solve the situation, or the problem is elsewhere.
If there's a good chance that with a reballing the situation could...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Here I am again, I took a couple of days to do everything calmly.
Over time I've seen quite a few videos about reballing and reflow, and I've already tried a few, so I'm not really at zero in this respect.
Anyway I ran the reflow, I waited for the pond to melt, then I lightly touched first one corner and then another of the chip, this one floated on the balls, I think I performed the procedure correctly, but the situation is not changed, always the same situation....Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
What temperature is recommended in this case for reflow.
If I can I'll try tomorrow with peace of mind.Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
So should I try a reflow on U5000?
There is resin in the corners holding it in place....Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
This I had already explained this in the post #9
[B]PP3V3_S5_AVREF_SMC - 3,28V[/B]Re: Macbook A1466 820-3437-A no green light and fan speed full
This I had already explained this in the post #9
[B]PP3V3_S5_AVREF_SMC - 3,28V[/B]...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
[b]3.05v[/b]Re: Macbook A1466 820-3437-A no green light and fan speed full
[b]3.05v[/b]...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Ok sorry for the misunderstanding.
488 kohmLeave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Red probe diode mode at ground if I understand correctly
[B]0.330[/B]Re: Macbook A1466 820-3437-A no green light and fan speed full
Red probe diode mode at ground if I understand correctly
[B]0.330[/B]...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Red probe diode mode at ground if I understand correctly
0.330...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Around [B]U5110[/B] and [B]J6100[/B] there are no signs of corrosion.
I noticed a sign of corrosion near[B] U5000[/B] and exactly on pin 1 of [B]C5125[/B] ([B]PP3V3_S5_AVREF_SMC[/B] that you asked to check)
There is [B]3.28V[/B] at this same pointRe: Macbook A1466 820-3437-A no green light and fan speed full
Around [B]U5110[/B] and [B]J6100[/B] there are no signs of corrosion.
I noticed a sign of corrosion near[B] U5000[/B]...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
[B]Smbus SDA and SCL lines on the ISL part - 3.39V[/B]
Other measurements:
[B]PPBUS_G3H - 8.12V [/B]
It's low because from how I understand it it should be 8.55V
(as from Louis Rossmann's video)
[B]L7095 on pin 1- 2.85V pin 2 - 3.41V[/B]
Also from Louis' video, I saw that on pin 1 of L7095 I should have 3.42Re: Macbook A1466 820-3437-A no green light and fan speed full
...Leave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
ppbus_g3h - 8.11VLeave a comment:
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Re: Macbook A1466 820-3437-A no green light and fan speed full
Here are the voltages:
D7005 pin n. 1 - 8.12V
D7005 pin n. 2 - 14.66V
D7005 pin n. 3 - 14.39V
L7095 PP3V42_G3H - 3.40VLeave a comment:
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Macbook A1466 820-3437-A no green light and fan speed full
Hi guys
The PC in question starts automatically when the power supply is connected both with magsafe power supply and with bench power supply it behaves the same.
This happens both when the pc is whole, i.e. with all the periferals connected, and only with the card removed from the case bare and raw.
There is no light on the magsafe connector, the fan spins fast and nothing appears on the screen.
I understand that the main voltages are present on the board, if I have checked correctly.
PP15V_TBT is not present.
There is no obvious oxide damage or the like,... -
Re: Dell Latitude E5570 Power but won't start
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Re: Dell Latitude E5570 Power but won't start
Unfortunately the capacitors are not marked on the motherboard, so I can't specify the exact location.
I checked the two capacitors right next to PL1600 and they give me 33.8 Ohms. ------- (From diagram PL1600 is +1.35_VRAMP)
Then one connected to PU301 and PL301 and gives me OL. ------- (From diagram PU301 and PL301 is +1VALWP)
Then another connected only to PL301 57.5 Ohm
Then another connected only to PU401 OL ------- (From diagram is +1VS_VCCIOP)
Then two more...Last edited by Paul20; 03-22-2023, 03:06 PM.Leave a comment:
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Re: Dell Latitude E5570 Power but won't start
I noticed that there are several shorted capacitors.
These are capacitors in the vicinity of some coils, type PL1600, PL301, PL401 and some others.
How can I find a culprit of this short?
Could that be the cause of the failure?Leave a comment:
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