bjf
Senior Member
Last Activity: 17 hours ago
Joined: 05-04-2016
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ALB-Repairs Did you ever solve this? I have the exact same issue. every detail: no video. backlight only. but boots normally and has video without trackpad... -
820-4924 Turns on once, then cycles
This liquid-damaged board will turn on once but then once you try to turn it on again it just cycles, with the CPU getting voltage during that cycling.... -
Deleting SSD's
Does anyone have a method for wiping the SSD's on the MacBook 12" models and the newer Pros and Airs? -
820-3462 TW0P Ts0P Failures
Any idea what would cause this? U5570 looks good. I had to fix U5400 for a IC0R failure. Not sure what I'm missing that would cause TW0P and Ts0P failure.... -
I'm about to let this one go. Any last ideas?Leave a comment:
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Any other thoughts on this?Leave a comment:
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P1V2S5SW_HSMUX_EN: 2.8M Ohms .795 in diode mode.
The charger that's with it is real. Not sure if they used a different one at some point...Last edited by bjf; 4 weeks ago.Leave a comment:
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Ok, I've checked everything. The only thing I can find missing is PP1V2_S5SW at 0V (P1V2S5SW_HSMUX_EN is at 0V)
How do you start this in...Leave a comment:
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I replaced U8230. Has 5V_S0 now, but still not turning on. It does have the D6900 SYS_DETECT_LED now though.Last edited by bjf; 4 weeks ago.Leave a comment:
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No USB activity. No 5V_S0. .535 in diode mode on that line.Leave a comment:
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No USB activity. I'll check coils.Leave a comment:
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820-00244 Has CPU but no video. No liquid-damage.
This board has .85V on cpu vcore but no output through internal screen or external monitor. No spill. Not sure where to go next. -
Done. Bad ISL. Thanks for getting me there.Leave a comment:
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Replacing R5100 made no difference, still at .184V. Replacing R7100 raised SMC_RESET_L to .6V.Leave a comment:
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Ok, it looks like you've found the problem. Not sure what's causing it though. It has 3.3V on SMC_RESET_L while plugged in but it drops to .184V with...Leave a comment:
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SMC_PBUS_VSENSE is at 0V, same as a good board. Diode mode on SMC_PBUS_VSENSE is .711, same as my good board. If you look in the pictures though, this...Leave a comment:
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Yes, R7006 is fine. Voltage getting through fine. It does have 3V42 on battery. To be sure I swapped R7006. No change.
Tried with working...Leave a comment:
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