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Search: Posts Made By: ronelex
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-09-2023, 09:20 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

PM_SLP_S4 not generated,
i check the 11 signal
1. PPVRTC_G3H - 3.42v
2. RTC_RESET_L - 3.42v
3. PCH_SRTCRST_L - 3.42v
4. PCH_INTVRMEN - 3.3v
5. PCH_DSWVRMEN_L - 3.24v
6....
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-08-2023, 12:22 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

I open the heatsink and the cpu is looks good no crack on the top of it
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 10:09 PM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

i tried to hang up the L7630 and the fluctuate stop, I will check now the CPU now
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 09:49 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

ok sir thanks for your guide, I try to check all the power rails and I dont see any shorted circuit, I just try to intect this 3v line tomorror,
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 09:22 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

consumer side pin 2
Yes i got a PSU Bench here and also thermal cam but it is in the shop im at home right now, only psu is available
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 08:53 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

820-0165 sir

What is the resistance to ground of PP3V3_S5_REG_R ? (L7560) - 400 ohms
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 08:28 AM
Replies: 16
Views: 389
Posted By ronelex
Re: Macbook Air A1466 Fluctuating 3v supply

ppbus_g3h- 8.62v
3v42 is stable
current stuck on 0.02A
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 02-07-2023, 04:39 AM
Replies: 16
Views: 389
Posted By ronelex
Macbook Air A1466 Fluctuating 3v supply

Hello
I got this unit with orange light but wont boot up
I notice that its L7560 3.3v supply is fluctuating
this is the reading I got on its PWM U7501 TPS51890A
pin 4- EN1 - 0v
pin 12 - EN -...
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