bjf
Senior Member
Last Activity: 10 hours ago
Joined: 05-04-2016
Location:
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Well, that's better than my success rate so they should feel lucky to have you. Branch out on your own? What country are you in? -
Well, they're not easy, so it would be hard to judge someone too harshly for not getting it fixed. It took me forever to get reasonably good at it. I...Leave a comment:
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The diode readings for the CD3215's compared to a good board are the same. They might still be damaged but they weren't hit directly by the spill. The...Leave a comment:
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Amazing find - bad U8510. Pads were charred underneath it. Has 20V and CPU now after cleaning up the pads and replacing U8510. My CD3215's were probably...Leave a comment:
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I've looked everywhere for shorts and can't find any. U8510 has SMC_RESET_L coming in at 3.4V. BUF_SMC_RESET_L is at 0V.Leave a comment:
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820-00928 Two USB ports don't work. 5V only.
The other two work and go to 20V and current comes through normally. The two near the spill stay at 5V and cycle on and off completely ever second or... -
Hi, I didn't replace them yet, I just reballed the chips that were on there to see if they might work still. If I replace them can I pull them off any...Leave a comment:
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820-00840 5V on USB-C
I've reballed the CD3215 chips with no change. I have PP3V3_G3H. I've looked at everything I can find in the area. The spill wan't too bad, just hit this...Last edited by bjf; 2 weeks ago. -
DFR_TOUCH_LID is at 0V and SMC_LID is at 3.4V on both boards.
Did not reflow U3900 yet. Was trying to rule everything else out first....Leave a comment:
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DFR_DISP_SMC_RST_L is present at 3.4V on the bad board, same as good board.
DFR_DISP_RST_L is missing on bad board. Should be 1.8V
PP1V8_S0...Last edited by bjf; 2 weeks ago.Leave a comment:
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Yes, my mistake, pin 3.
It looks like you might be getting to the issue. DFR_DISP_RESET_L is missing from the bad board.
...Leave a comment:
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Yes, I have a good board I'm comparing it to. That board has 1.8V on DFR_TOUCH_INT_L. It's sitting on my desk with nothing plugged into it. The bad board...Leave a comment:
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I just realized we didn't get rid of this yet so it's still here. I found out that DFR_TOUCH_INT_L is measuring .18V and it should be 1.8V. Everything...Leave a comment:
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Yes, I did all of it. Our network is very simple, just a basic setup but I did verify that I was able to access everything on that Apple page by wifi...Leave a comment:
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I had to let this one go, but I did have internet fine through wifi and ethernet when I was booted into the system.Leave a comment:
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I always boot into a USB test drive when testing so I'm thinking that would avoid any issues with traffic blockers. Either way, I did boot into the system...Leave a comment:
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Thanks for the tip. Good to know.Leave a comment:
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Ok, thanks, I tried reflowing the SMC and cleaning up anything else I could find but it was still not spinning up properly. I'll just sell it as-is rather...Leave a comment:
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